20154735402 has 16 divisors (see below), whose sum is σ = 40617178272. Its totient is φ = 6666960560.

The previous prime is 20154735319. The next prime is 20154735451. The reversal of 20154735402 is 20453745102.

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, 12820293 + ... + 12821864.

It is an arithmetic number, because the mean of its divisors is an integer number (2538573642).

Almost surely, 2^20154735402 is an apocalyptic number.

20154735402 is an abundant number, since it is smaller than the sum of its proper divisors (20462442870).

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

20154735402 is a wasteful number, since it uses less digits than its factorization.

20154735402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25642293.

The product of its (nonzero) digits is 33600, while the sum is 33.

The spelling of 20154735402 in words is "twenty billion, one hundred fifty-four million, seven hundred thirty-five thousand, four hundred two".