20344574342157 has 32 divisors (see below), whose sum is σ = 29287203595776. Its totient is φ = 12487820928000.

The previous prime is 20344574342137. The next prime is 20344574342233. The reversal of 20344574342157 is 75124347544302.

It is a happy number.

It is not a de Polignac number, because 20344574342157 - 2⁶ = 20344574342093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20344574342117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 511265932 + ... + 511305722.

It is an arithmetic number, because the mean of its divisors is an integer number (915225112368).

Almost surely, 2^{20344574342157} is an apocalyptic number.

It is an amenable number.

20344574342157 is a deficient number, since it is larger than the sum of its proper divisors (8942629253619).

20344574342157 is a wasteful number, since it uses less digits than its factorization.

20344574342157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72901.

The product of its (nonzero) digits is 11289600, while the sum is 51.

The spelling of 20344574342157 in words is "twenty trillion, three hundred forty-four billion, five hundred seventy-four million, three hundred forty-two thousand, one hundred fifty-seven".