657610652542 has 16 divisors (see below), whose sum is σ = 1020535151760. Its totient is φ = 317434598208.

The previous prime is 657610652507. The next prime is 657610652549. The reversal of 657610652542 is 245256016756.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (657610652549) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8088 + ... + 1146859.

It is an arithmetic number, because the mean of its divisors is an integer number (63783446985).

Almost surely, 2^657610652542 is an apocalyptic number.

657610652542 is a deficient number, since it is larger than the sum of its proper divisors (362924499218).

657610652542 is a wasteful number, since it uses less digits than its factorization.

657610652542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1164795.

The product of its (nonzero) digits is 3024000, while the sum is 49.

The spelling of 657610652542 in words is "six hundred fifty-seven billion, six hundred ten million, six hundred fifty-two thousand, five hundred forty-two".