149637596621568 has 576 divisors, whose sum is σ = 439880734605312. Its totient is φ = 44783603875840.

The previous prime is 149637596621537. The next prime is 149637596621603. The reversal of 149637596621568 is 865126695736941.

It is a junction number, because it is equal to n+sod(n) for n = 149637596621493 and 149637596621502.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 252339960280 + ... + 252339960872.

It is an arithmetic number, because the mean of its divisors is an integer number (763681830912).

Almost surely, 2^{149637596621568} 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 149637596621568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (219940367302656).

149637596621568 is an abundant number, since it is smaller than the sum of its proper divisors (290243137983744).

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

149637596621568 is a wasteful number, since it uses less digits than its factorization.

149637596621568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1640 (or 1626 counting only the distinct ones).

The product of its digits is 3527193600, while the sum is 78.

The spelling of 149637596621568 in words is "one hundred forty-nine trillion, six hundred thirty-seven billion, five hundred ninety-six million, six hundred twenty-one thousand, five hundred sixty-eight".