20147658216 has 64 divisors (see below), whose sum is σ = 60594470400. Its totient is φ = 5453500608.

The previous prime is 20147658203. The next prime is 20147658221. The reversal of 20147658216 is 61285674102.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3152770 + ... + 3159153.

It is an arithmetic number, because the mean of its divisors is an integer number (946788600).

Almost surely, 2^20147658216 is an apocalyptic number.

It is an amenable number.

20147658216 is an abundant number, since it is smaller than the sum of its proper divisors (40446812184).

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

20147658216 is a wasteful number, since it uses less digits than its factorization.

20147658216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6311958 (or 6311954 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 42.

The spelling of 20147658216 in words is "twenty billion, one hundred forty-seven million, six hundred fifty-eight thousand, two hundred sixteen".