151721530272 has 480 divisors, whose sum is σ = 498659825664. Its totient is φ = 44939059200.

The previous prime is 151721530211. The next prime is 151721530297. The reversal of 151721530272 is 272035127151.

151721530272 is a `hidden beast` number, since 1 + 51 + 7 + 2 + 1 + 530 + 2 + 72 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 352021897 + ... + 352022327.

Almost surely, 2^151721530272 is an apocalyptic number.

151721530272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 151721530272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (249329912832).

151721530272 is an abundant number, since it is smaller than the sum of its proper divisors (346938295392).

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

151721530272 is a wasteful number, since it uses less digits than its factorization.

151721530272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 834 (or 817 counting only the distinct ones).

The product of its (nonzero) digits is 29400, while the sum is 36.

The spelling of 151721530272 in words is "one hundred fifty-one billion, seven hundred twenty-one million, five hundred thirty thousand, two hundred seventy-two".