20154264512 has 28 divisors (see below), whose sum is σ = 40475480136. Its totient is φ = 9955718400.

The previous prime is 20154264509. The next prime is 20154264539. The reversal of 20154264512 is 21546245102.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

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, 1891739 + ... + 1902362.

It is an arithmetic number, because the mean of its divisors is an integer number (1445552862).

Almost surely, 2^20154264512 is an apocalyptic number.

It is an amenable number.

20154264512 is an abundant number, since it is smaller than the sum of its proper divisors (20321215624).

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

20154264512 is an equidigital number, since it uses as much as digits as its factorization.

20154264512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3794196 (or 3794186 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 32.

The spelling of 20154264512 in words is "twenty billion, one hundred fifty-four million, two hundred sixty-four thousand, five hundred twelve".