51438665082288 has 80 divisors (see below), whose sum is σ = 149639753014272. Its totient is φ = 15084652512000.

The previous prime is 51438665082263. The next prime is 51438665082323. The reversal of 51438665082288 is 88228056683415.

It is a super-2 number, since 2×51438665082288² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1571301603 + ... + 1571334338.

Almost surely, 2^{51438665082288} is an apocalyptic number.

It is an amenable number.

51438665082288 is an abundant number, since it is smaller than the sum of its proper divisors (98201087931984).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51438665082288 is a wasteful number, since it uses less digits than its factorization.

51438665082288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3142635994 (or 3142635988 counting only the distinct ones).

The product of its (nonzero) digits is 176947200, while the sum is 66.

The spelling of 51438665082288 in words is "fifty-one trillion, four hundred thirty-eight billion, six hundred sixty-five million, eighty-two thousand, two hundred eighty-eight".