256621006532150 has 48 divisors (see below), whose sum is σ = 541085911774800. Its totient is φ = 89765404709760.

The previous prime is 256621006532069. The next prime is 256621006532183. The reversal of 256621006532150 is 51235600126652.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10389502085 + ... + 10389526784.

It is an arithmetic number, because the mean of its divisors is an integer number (11272623161975).

Almost surely, 2^{256621006532150} is an apocalyptic number.

256621006532150 is an abundant number, since it is smaller than the sum of its proper divisors (284464905242650).

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

256621006532150 is a wasteful number, since it uses less digits than its factorization.

256621006532150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20779028913 (or 20779028908 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 44.

The spelling of 256621006532150 in words is "two hundred fifty-six trillion, six hundred twenty-one billion, six million, five hundred thirty-two thousand, one hundred fifty".