20131501845 has 64 divisors (see below), whose sum is σ = 40121432064. Its totient is φ = 8392654080.

The previous prime is 20131501837. The next prime is 20131501891. The reversal of 20131501845 is 54810513102.

It is not a de Polignac number, because 20131501845 - 2³ = 20131501837 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 24450 + ... + 202140.

It is an arithmetic number, because the mean of its divisors is an integer number (626897376).

Almost surely, 2^20131501845 is an apocalyptic number.

It is an amenable number.

20131501845 is a deficient number, since it is larger than the sum of its proper divisors (19989930219).

20131501845 is a wasteful number, since it uses less digits than its factorization.

20131501845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177802.

The product of its (nonzero) digits is 4800, while the sum is 30.

The spelling of 20131501845 in words is "twenty billion, one hundred thirty-one million, five hundred one thousand, eight hundred forty-five".