64786481490026 has 16 divisors (see below), whose sum is σ = 98043037485768. Its totient is φ = 32105488396800.

The previous prime is 64786481489981. The next prime is 64786481490037. The reversal of 64786481490026 is 62009418468746.

It is a Cunningham number, because it is equal to 8049005²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 64144321270225 + 642160219801 = 8009015^2 + 801349^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1863236 + ... + 11534496.

Almost surely, 2^{64786481490026} is an apocalyptic number.

64786481490026 is a deficient number, since it is larger than the sum of its proper divisors (33256555995742).

64786481490026 is a wasteful number, since it uses less digits than its factorization.

64786481490026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9701017.

The product of its (nonzero) digits is 111476736, while the sum is 65.

The spelling of 64786481490026 in words is "sixty-four trillion, seven hundred eighty-six billion, four hundred eighty-one million, four hundred ninety thousand, twenty-six".