20567016834 has 64 divisors (see below), whose sum is σ = 50658585600. Its totient is φ = 5420831040.

The previous prime is 20567016781. The next prime is 20567016851. The reversal of 20567016834 is 43861076502.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 916569 + ... + 938739.

It is an arithmetic number, because the mean of its divisors is an integer number (791540400).

Almost surely, 2^20567016834 is an apocalyptic number.

20567016834 is an abundant number, since it is smaller than the sum of its proper divisors (30091568766).

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

20567016834 is a wasteful number, since it uses less digits than its factorization.

20567016834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23895.

The product of its (nonzero) digits is 241920, while the sum is 42.

The spelling of 20567016834 in words is "twenty billion, five hundred sixty-seven million, sixteen thousand, eight hundred thirty-four".