20157352655 has 32 divisors (see below), whose sum is σ = 27560494080. Its totient is φ = 14021838720.

The previous prime is 20157352637. The next prime is 20157352717. The reversal of 20157352655 is 55625375102.

It is a happy number.

It is not a de Polignac number, because 20157352655 - 2¹² = 20157348559 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36122 + ... + 204008.

It is an arithmetic number, because the mean of its divisors is an integer number (861265440).

Almost surely, 2^20157352655 is an apocalyptic number.

20157352655 is a deficient number, since it is larger than the sum of its proper divisors (7403141425).

20157352655 is a wasteful number, since it uses less digits than its factorization.

20157352655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167999.

The product of its (nonzero) digits is 315000, while the sum is 41.

The spelling of 20157352655 in words is "twenty billion, one hundred fifty-seven million, three hundred fifty-two thousand, six hundred fifty-five".