20295403156 has 48 divisors (see below), whose sum is σ = 41335862400. Its totient is φ = 8538784128.

The previous prime is 20295403001. The next prime is 20295403157. The reversal of 20295403156 is 65130459202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20295403157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1242450 + ... + 1258678.

It is an arithmetic number, because the mean of its divisors is an integer number (861163800).

Almost surely, 2^20295403156 is an apocalyptic number.

It is an amenable number.

20295403156 is an abundant number, since it is smaller than the sum of its proper divisors (21040459244).

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

20295403156 is a wasteful number, since it uses less digits than its factorization.

20295403156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17056 (or 17054 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 37.

The spelling of 20295403156 in words is "twenty billion, two hundred ninety-five million, four hundred three thousand, one hundred fifty-six".