256501150270434 has 24 divisors (see below), whose sum is σ = 555769661736432. Its totient is φ = 85497741964440.

The previous prime is 256501150270427. The next prime is 256501150270439. The reversal of 256501150270434 is 434072051105652.

256501150270434 is a `hidden beast` number, since 2 + 5 + 65 + 0 + 1 + 150 + 2 + 7 + 0 + 434 = 666.

256501150270434 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 256501150270434.

It is not an unprimeable number, because it can be changed into a prime (256501150270439) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 219522724 + ... + 220688079.

It is an arithmetic number, because the mean of its divisors is an integer number (23157069239018).

Almost surely, 2^{256501150270434} is an apocalyptic number.

256501150270434 is an abundant number, since it is smaller than the sum of its proper divisors (299268511465998).

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

256501150270434 is a wasteful number, since it uses less digits than its factorization.

256501150270434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440243182 (or 440243179 counting only the distinct ones).

The product of its (nonzero) digits is 1008000, while the sum is 45.

The spelling of 256501150270434 in words is "two hundred fifty-six trillion, five hundred one billion, one hundred fifty million, two hundred seventy thousand, four hundred thirty-four".