216462757575456 has 144 divisors (see below), whose sum is σ = 708639028441344. Its totient is φ = 61395067763712.

The previous prime is 216462757575437. The next prime is 216462757575487. The reversal of 216462757575456 is 654575757264612.

216462757575456 is a `hidden beast` number, since 2 + 1 + 6 + 4 + 6 + 2 + 7 + 5 + 7 + 575 + 45 + 6 = 666.

216462757575456 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-2 number, since 2×216462757575456² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 391593880 + ... + 392146263.

It is an arithmetic number, because the mean of its divisors is an integer number (4921104364176).

Almost surely, 2^{216462757575456} is an apocalyptic number.

It is an amenable number.

216462757575456 is an abundant number, since it is smaller than the sum of its proper divisors (492176270865888).

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

216462757575456 is a wasteful number, since it uses less digits than its factorization.

216462757575456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 783740303 (or 783740292 counting only the distinct ones).

The product of its digits is 2963520000, while the sum is 72.

The spelling of 216462757575456 in words is "two hundred sixteen trillion, four hundred sixty-two billion, seven hundred fifty-seven million, five hundred seventy-five thousand, four hundred fifty-six".