655498081720 has 16 divisors (see below), whose sum is σ = 1474870683960. Its totient is φ = 262199232672.

The previous prime is 655498081709. The next prime is 655498081757. The reversal of 655498081720 is 27180894556.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8193725982 + ... + 8193726061.

Almost surely, 2^655498081720 is an apocalyptic number.

It is an amenable number.

655498081720 is an abundant number, since it is smaller than the sum of its proper divisors (819372602240).

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

655498081720 is a wasteful number, since it uses less digits than its factorization.

655498081720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16387452054 (or 16387452050 counting only the distinct ones).

The product of its (nonzero) digits is 4838400, while the sum is 55.

The spelling of 655498081720 in words is "six hundred fifty-five billion, four hundred ninety-eight million, eighty-one thousand, seven hundred twenty".