212457109832 has 16 divisors (see below), whose sum is σ = 434571361200. Its totient is φ = 96571413520.

The previous prime is 212457109819. The next prime is 212457109859. The reversal of 212457109832 is 238901754212.

It is a super-2 number, since 2×212457109832² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1207142582 + ... + 1207142757.

It is an arithmetic number, because the mean of its divisors is an integer number (27160710075).

Almost surely, 2^212457109832 is an apocalyptic number.

212457109832 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

212457109832 is an abundant number, since it is smaller than the sum of its proper divisors (222114251368).

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

212457109832 is a wasteful number, since it uses less digits than its factorization.

212457109832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2414285356 (or 2414285352 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 44.

The spelling of 212457109832 in words is "two hundred twelve billion, four hundred fifty-seven million, one hundred nine thousand, eight hundred thirty-two".