655626501620 has 24 divisors (see below), whose sum is σ = 1449279636000. Its totient is φ = 248447937312.

The previous prime is 655626501619. The next prime is 655626501641. The reversal of 655626501620 is 26105626556.

It is a super-2 number, since 2×655626501620² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 862666070 + ... + 862666829.

It is an arithmetic number, because the mean of its divisors is an integer number (60386651500).

Almost surely, 2^655626501620 is an apocalyptic number.

It is an amenable number.

655626501620 is an abundant number, since it is smaller than the sum of its proper divisors (793653134380).

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

655626501620 is a wasteful number, since it uses less digits than its factorization.

655626501620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1725332927 (or 1725332925 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 44.

The spelling of 655626501620 in words is "six hundred fifty-five billion, six hundred twenty-six million, five hundred one thousand, six hundred twenty".