655745547538 has 16 divisors (see below), whose sum is σ = 984309857280. Its totient is φ = 327642321600.

The previous prime is 655745547493. The next prime is 655745547539. The reversal of 655745547538 is 835745547556.

It is a super-2 number, since 2×655745547538² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 655745547538.

It is not an unprimeable number, because it can be changed into a prime (655745547539) 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, 35845498 + ... + 35863786.

It is an arithmetic number, because the mean of its divisors is an integer number (61519366080).

Almost surely, 2^655745547538 is an apocalyptic number.

655745547538 is a deficient number, since it is larger than the sum of its proper divisors (328564309742).

655745547538 is a wasteful number, since it uses less digits than its factorization.

655745547538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29913.

The product of its digits is 352800000, while the sum is 64.

The spelling of 655745547538 in words is "six hundred fifty-five billion, seven hundred forty-five million, five hundred forty-seven thousand, five hundred thirty-eight".