251053084156 has 12 divisors (see below), whose sum is σ = 502106168368. Its totient is φ = 107594178912.

The previous prime is 251053084153. The next prime is 251053084171. The reversal of 251053084156 is 651480350152.

251053084156 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (251053084153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4483090761 + ... + 4483090816.

Almost surely, 2^251053084156 is an apocalyptic number.

It is an amenable number.

251053084156 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

251053084156 is a wasteful number, since it uses less digits than its factorization.

251053084156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8966181588 (or 8966181586 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 40.

The spelling of 251053084156 in words is "two hundred fifty-one billion, fifty-three million, eighty-four thousand, one hundred fifty-six".