151515215532544 has 160 divisors (see below), whose sum is σ = 313922877649920. Its totient is φ = 72980280115200.

The previous prime is 151515215532523. The next prime is 151515215532601. The reversal of 151515215532544 is 445235512515151.

It is a happy number.

It is a super-2 number, since 2×151515215532544² (a number of 29 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

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, 11815888117 + ... + 11815900939.

It is an arithmetic number, because the mean of its divisors is an integer number (1962017985312).

Almost surely, 2^{151515215532544} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 151515215532544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (156961438824960).

151515215532544 is an abundant number, since it is smaller than the sum of its proper divisors (162407662117376).

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

151515215532544 is a wasteful number, since it uses less digits than its factorization.

151515215532544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16202 (or 16186 counting only the distinct ones).

The product of its digits is 3000000, while the sum is 49.

The spelling of 151515215532544 in words is "one hundred fifty-one trillion, five hundred fifteen billion, two hundred fifteen million, five hundred thirty-two thousand, five hundred forty-four".