20001513534 has 32 divisors (see below), whose sum is σ = 41301550080. Its totient is φ = 6450835200.

The previous prime is 20001513509. The next prime is 20001513547. The reversal of 20001513534 is 43531510002.

It is a congruent 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, 1595029 + ... + 1607519.

It is an arithmetic number, because the mean of its divisors is an integer number (1290673440).

Almost surely, 2^20001513534 is an apocalyptic number.

20001513534 is an abundant number, since it is smaller than the sum of its proper divisors (21300036546).

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

20001513534 is a wasteful number, since it uses less digits than its factorization.

20001513534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21136.

The product of its (nonzero) digits is 1800, while the sum is 24.

The spelling of 20001513534 in words is "twenty billion, one million, five hundred thirteen thousand, five hundred thirty-four".