655620266215 has 8 divisors (see below), whose sum is σ = 786750151968. Its totient is φ = 524492324640.

The previous prime is 655620266177. The next prime is 655620266261. The reversal of 655620266215 is 512662026556.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 655620266215 - 2¹³ = 655620258023 is a prime.

It is a Duffinian number.

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, 404029 + ... + 1214281.

It is an arithmetic number, because the mean of its divisors is an integer number (98343768996).

Almost surely, 2^655620266215 is an apocalyptic number.

655620266215 is a deficient number, since it is larger than the sum of its proper divisors (131129885753).

655620266215 is a wasteful number, since it uses less digits than its factorization.

655620266215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 972089.

The product of its (nonzero) digits is 1296000, while the sum is 46.

The spelling of 655620266215 in words is "six hundred fifty-five billion, six hundred twenty million, two hundred sixty-six thousand, two hundred fifteen".