2001537400239 has 24 divisors (see below), whose sum is σ = 3157354785312. Its totient is φ = 1214367215040.

The previous prime is 2001537400231. The next prime is 2001537400241. The reversal of 2001537400239 is 9320047351002.

2001537400239 is a `hidden beast` number, since 2 + 0 + 0 + 15 + 3 + 7 + 400 + 239 = 666.

It is not a de Polignac number, because 2001537400239 - 2³ = 2001537400231 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001537400231) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 120464632 + ... + 120481245.

It is an arithmetic number, because the mean of its divisors is an integer number (131556449388).

Almost surely, 2^{2001537400239} is an apocalyptic number.

2001537400239 is a deficient number, since it is larger than the sum of its proper divisors (1155817385073).

2001537400239 is a wasteful number, since it uses less digits than its factorization.

2001537400239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240945967 (or 240945964 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The spelling of 2001537400239 in words is "two trillion, one billion, five hundred thirty-seven million, four hundred thousand, two hundred thirty-nine".