20115950168 has 32 divisors (see below), whose sum is σ = 38276355600. Its totient is φ = 9909723648.

The previous prime is 20115950159. The next prime is 20115950191. The reversal of 20115950168 is 86105951102.

It is a super-2 number, since 2×20115950168² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151580 + ... + 251412.

Almost surely, 2^20115950168 is an apocalyptic number.

It is an amenable number.

20115950168 is a deficient number, since it is larger than the sum of its proper divisors (18160405432).

20115950168 is a wasteful number, since it uses less digits than its factorization.

20115950168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100211 (or 100207 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 38.

The spelling of 20115950168 in words is "twenty billion, one hundred fifteen million, nine hundred fifty thousand, one hundred sixty-eight".