620356155720 has 128 divisors (see below), whose sum is σ = 2127385555200. Its totient is φ = 141765682176.

The previous prime is 620356155709. The next prime is 620356155737. The reversal of 620356155720 is 27551653026.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4020966 + ... + 4172394.

It is an arithmetic number, because the mean of its divisors is an integer number (16620199650).

Almost surely, 2^620356155720 is an apocalyptic number.

620356155720 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

620356155720 is an abundant number, since it is smaller than the sum of its proper divisors (1507029399480).

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

620356155720 is a wasteful number, since it uses less digits than its factorization.

620356155720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156327 (or 156323 counting only the distinct ones).

The product of its (nonzero) digits is 378000, while the sum is 42.

The spelling of 620356155720 in words is "six hundred twenty billion, three hundred fifty-six million, one hundred fifty-five thousand, seven hundred twenty".