20147015970 has 24 divisors (see below), whose sum is σ = 52382241756. Its totient is φ = 5372537568.

The previous prime is 20147015963. The next prime is 20147015989. The reversal of 20147015970 is 7951074102.

It is a happy number.

20147015970 is a `hidden beast` number, since 20 + 1 + 47 + 0 + 1 + 597 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 18798877881 + 1348138089 = 137109^2 + 36717^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 111927777 + ... + 111927956.

Almost surely, 2^20147015970 is an apocalyptic number.

20147015970 is an abundant number, since it is smaller than the sum of its proper divisors (32235225786).

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

20147015970 is a wasteful number, since it uses less digits than its factorization.

20147015970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223855746 (or 223855743 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 36.

The spelling of 20147015970 in words is "twenty billion, one hundred forty-seven million, fifteen thousand, nine hundred seventy".