20107161520 has 40 divisors (see below), whose sum is σ = 46760083056. Its totient is φ = 8040983808.

The previous prime is 20107161517. The next prime is 20107161533. The reversal of 20107161520 is 2516170102.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 344374 + ... + 398506.

Almost surely, 2^20107161520 is an apocalyptic number.

20107161520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20107161520 is an abundant number, since it is smaller than the sum of its proper divisors (26652921536).

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

20107161520 is a wasteful number, since it uses less digits than its factorization.

20107161520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58789 (or 58783 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 25.

The spelling of 20107161520 in words is "twenty billion, one hundred seven million, one hundred sixty-one thousand, five hundred twenty".