620261656512 has 28 divisors (see below), whose sum is σ = 1641108966696. Its totient is φ = 206753885440.

The previous prime is 620261656489. The next prime is 620261656543. The reversal of 620261656512 is 215656162026.

It is a happy number.

It is a super-2 number, since 2×620261656512² (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 3 ways as a sum of consecutive naturals, for example, 1615264539 + ... + 1615264922.

Almost surely, 2^620261656512 is an apocalyptic number.

It is an amenable number.

620261656512 is an abundant number, since it is smaller than the sum of its proper divisors (1020847310184).

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

620261656512 is a wasteful number, since it uses less digits than its factorization.

620261656512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3230529476 (or 3230529466 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 42.

The spelling of 620261656512 in words is "six hundred twenty billion, two hundred sixty-one million, six hundred fifty-six thousand, five hundred twelve".