151506172020 has 48 divisors (see below), whose sum is σ = 484819751808. Its totient is φ = 34629982080.

The previous prime is 151506171991. The next prime is 151506172067. The reversal of 151506172020 is 20271605151.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

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, 180364071 + ... + 180364910.

It is an arithmetic number, because the mean of its divisors is an integer number (10100411496).

Almost surely, 2^151506172020 is an apocalyptic number.

151506172020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

151506172020 is an abundant number, since it is smaller than the sum of its proper divisors (333313579788).

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

151506172020 is a wasteful number, since it uses less digits than its factorization.

151506172020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360729000 (or 360728998 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 30.

Adding to 151506172020 its reverse (20271605151), we get a palindrome (171777777171).

The spelling of 151506172020 in words is "one hundred fifty-one billion, five hundred six million, one hundred seventy-two thousand, twenty".