51010051556 has 24 divisors (see below), whose sum is σ = 94852648800. Its totient is φ = 23919898752.

The previous prime is 51010051553. The next prime is 51010051571. The reversal of 51010051556 is 65515001015.

It is a happy number.

It is a super-2 number, since 2×51010051556² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51010051553) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1306106 + ... + 1344593.

It is an arithmetic number, because the mean of its divisors is an integer number (3952193700).

Almost surely, 2^51010051556 is an apocalyptic number.

It is an amenable number.

51010051556 is a deficient number, since it is larger than the sum of its proper divisors (43842597244).

51010051556 is a wasteful number, since it uses less digits than its factorization.

51010051556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2651003 (or 2651001 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 29.

The spelling of 51010051556 in words is "fifty-one billion, ten million, fifty-one thousand, five hundred fifty-six".