20155150700 has 72 divisors (see below), whose sum is σ = 48322969632. Its totient is φ = 7257902080.

The previous prime is 20155150693. The next prime is 20155150777. The reversal of 20155150700 is 705155102.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 20155150700.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 218639 + ... + 296838.

It is an arithmetic number, because the mean of its divisors is an integer number (671152356).

Almost surely, 2^20155150700 is an apocalyptic number.

20155150700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20155150700 is an abundant number, since it is smaller than the sum of its proper divisors (28167818932).

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

20155150700 is a wasteful number, since it uses less digits than its factorization.

20155150700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 515531 (or 515524 counting only the distinct ones).

The product of its (nonzero) digits is 1750, while the sum is 26.

The spelling of 20155150700 in words is "twenty billion, one hundred fifty-five million, one hundred fifty thousand, seven hundred".