20154375654 has 16 divisors (see below), whose sum is σ = 46067144448. Its totient is φ = 5758393032.

The previous prime is 20154375629. The next prime is 20154375677. The reversal of 20154375654 is 45657345102.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 479866087 = 20154375654 / (2 + 0 + 1 + 5 + 4 + 3 + 7 + 5 + 6 + 5 + 4).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 239933002 + ... + 239933085.

It is an arithmetic number, because the mean of its divisors is an integer number (2879196528).

Almost surely, 2^20154375654 is an apocalyptic number.

20154375654 is an abundant number, since it is smaller than the sum of its proper divisors (25912768794).

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

20154375654 is a wasteful number, since it uses less digits than its factorization.

20154375654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479866099.

The product of its (nonzero) digits is 504000, while the sum is 42.

The spelling of 20154375654 in words is "twenty billion, one hundred fifty-four million, three hundred seventy-five thousand, six hundred fifty-four".