20429163915 has 32 divisors (see below), whose sum is σ = 33218228736. Its totient is φ = 10719459840.

The previous prime is 20429163899. The next prime is 20429163943. The reversal of 20429163915 is 51936192402.

It is not a de Polignac number, because 20429163915 - 2⁴ = 20429163899 is a prime.

It is a super-3 number, since 3×20429163915³ (a number of 32 digits) contains 333 as substring.

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, 266002 + ... + 334088.

It is an arithmetic number, because the mean of its divisors is an integer number (1038069648).

Almost surely, 2^20429163915 is an apocalyptic number.

20429163915 is a deficient number, since it is larger than the sum of its proper divisors (12789064821).

20429163915 is a wasteful number, since it uses less digits than its factorization.

20429163915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68419.

The product of its (nonzero) digits is 116640, while the sum is 42.

The spelling of 20429163915 in words is "twenty billion, four hundred twenty-nine million, one hundred sixty-three thousand, nine hundred fifteen".