51556324410988 has 6 divisors (see below), whose sum is σ = 90223567719236. Its totient is φ = 25778162205492.

The previous prime is 51556324410971. The next prime is 51556324410989. The reversal of 51556324410988 is 88901442365515.

It is a happy number.

It is a super-2 number, since 2×51556324410988² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51556324410989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6444540551370 + ... + 6444540551377.

Almost surely, 2^{51556324410988} is an apocalyptic number.

It is an amenable number.

51556324410988 is a deficient number, since it is larger than the sum of its proper divisors (38667243308248).

51556324410988 is a wasteful number, since it uses less digits than its factorization.

51556324410988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12889081102751 (or 12889081102749 counting only the distinct ones).

The product of its (nonzero) digits is 41472000, while the sum is 61.

The spelling of 51556324410988 in words is "fifty-one trillion, five hundred fifty-six billion, three hundred twenty-four million, four hundred ten thousand, nine hundred eighty-eight".