20572343015145 has 32 divisors (see below), whose sum is σ = 33338269785600. Its totient is φ = 10831124838144.

The previous prime is 20572343015129. The next prime is 20572343015171. The reversal of 20572343015145 is 54151034327502.

It is not a de Polignac number, because 20572343015145 - 2⁴ = 20572343015129 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20572343015097 and 20572343015106.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5221471 + ... + 8270939.

It is an arithmetic number, because the mean of its divisors is an integer number (1041820930800).

Almost surely, 2^{20572343015145} is an apocalyptic number.

It is an amenable number.

20572343015145 is a deficient number, since it is larger than the sum of its proper divisors (12765926770455).

20572343015145 is a wasteful number, since it uses less digits than its factorization.

20572343015145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3055249.

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

The spelling of 20572343015145 in words is "twenty trillion, five hundred seventy-two billion, three hundred forty-three million, fifteen thousand, one hundred forty-five".