20575156345 has 16 divisors (see below), whose sum is σ = 26186038272. Its totient is φ = 15486356160.

The previous prime is 20575156337. The next prime is 20575156363. The reversal of 20575156345 is 54365157502.

It is not a de Polignac number, because 20575156345 - 2³ = 20575156337 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1459497 + ... + 1473526.

It is an arithmetic number, because the mean of its divisors is an integer number (1636627392).

Almost surely, 2^20575156345 is an apocalyptic number.

It is an amenable number.

20575156345 is a deficient number, since it is larger than the sum of its proper divisors (5610881927).

20575156345 is a wasteful number, since it uses less digits than its factorization.

20575156345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2933112.

The product of its (nonzero) digits is 630000, while the sum is 43.

The spelling of 20575156345 in words is "twenty billion, five hundred seventy-five million, one hundred fifty-six thousand, three hundred forty-five".