20129937015 has 16 divisors (see below), whose sum is σ = 32400764928. Its totient is φ = 10671677856.

The previous prime is 20129937013. The next prime is 20129937029. The reversal of 20129937015 is 51073992102.

It is not a de Polignac number, because 20129937015 - 2¹ = 20129937013 is a prime.

It is a super-2 number, since 2×20129937015² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20129937013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4015447 + ... + 4020456.

It is an arithmetic number, because the mean of its divisors is an integer number (2025047808).

Almost surely, 2^20129937015 is an apocalyptic number.

20129937015 is a deficient number, since it is larger than the sum of its proper divisors (12270827913).

20129937015 is a wasteful number, since it uses less digits than its factorization.

20129937015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8036078.

The product of its (nonzero) digits is 34020, while the sum is 39.

The spelling of 20129937015 in words is "twenty billion, one hundred twenty-nine million, nine hundred thirty-seven thousand, fifteen".