245120637656 has 16 divisors (see below), whose sum is σ = 460046993040. Its totient is φ = 122441439520.

The previous prime is 245120637607. The next prime is 245120637673. The reversal of 245120637656 is 656736021542.

It is a self number, because there is not a number n which added to its sum of digits gives 245120637656.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14851151 + ... + 14867646.

It is an arithmetic number, because the mean of its divisors is an integer number (28752937065).

Almost surely, 2^245120637656 is an apocalyptic number.

It is an amenable number.

245120637656 is a deficient number, since it is larger than the sum of its proper divisors (214926355384).

245120637656 is a wasteful number, since it uses less digits than its factorization.

245120637656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29719834 (or 29719830 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 47.

The spelling of 245120637656 in words is "two hundred forty-five billion, one hundred twenty million, six hundred thirty-seven thousand, six hundred fifty-six".