65357557672880 has 40 divisors (see below), whose sum is σ = 165770532645264. Its totient is φ = 23766384608000.

The previous prime is 65357557672861. The next prime is 65357557672993. The reversal of 65357557672880 is 8827675575356.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×65357557672880² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 65357557672798 and 65357557672807.

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, 37134975071 + ... + 37134976830.

Almost surely, 2^{65357557672880} is an apocalyptic number.

It is an amenable number.

65357557672880 is an abundant number, since it is smaller than the sum of its proper divisors (100412974972384).

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

65357557672880 is a wasteful number, since it uses less digits than its factorization.

65357557672880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74269951925 (or 74269951919 counting only the distinct ones).

The product of its (nonzero) digits is 2963520000, while the sum is 74.

The spelling of 65357557672880 in words is "sixty-five trillion, three hundred fifty-seven billion, five hundred fifty-seven million, six hundred seventy-two thousand, eight hundred eighty".