626645505406045 has 16 divisors (see below), whose sum is σ = 764325431998848. Its totient is φ = 493104625041600.

The previous prime is 626645505406013. The next prime is 626645505406097. The reversal of 626645505406045 is 540604505546626.

It is not a de Polignac number, because 626645505406045 - 2⁵ = 626645505406013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1381297281 + ... + 1381750870.

It is an arithmetic number, because the mean of its divisors is an integer number (47770339499928).

Almost surely, 2^{626645505406045} is an apocalyptic number.

It is an amenable number.

626645505406045 is a deficient number, since it is larger than the sum of its proper divisors (137679926592803).

626645505406045 is a wasteful number, since it uses less digits than its factorization.

626645505406045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2763048900.

The product of its (nonzero) digits is 103680000, while the sum is 58.

The spelling of 626645505406045 in words is "six hundred twenty-six trillion, six hundred forty-five billion, five hundred five million, four hundred six thousand, forty-five".