20516600620 has 24 divisors (see below), whose sum is σ = 45619265664. Its totient is φ = 7723896576.

The previous prime is 20516600609. The next prime is 20516600627. The reversal of 20516600620 is 2600661502.

It is a super-3 number, since 3×20516600620³ (a number of 32 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (20516600627) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30171132 + ... + 30171811.

It is an arithmetic number, because the mean of its divisors is an integer number (1900802736).

Almost surely, 2^20516600620 is an apocalyptic number.

20516600620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20516600620 is an abundant number, since it is smaller than the sum of its proper divisors (25102665044).

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

20516600620 is a wasteful number, since it uses less digits than its factorization.

20516600620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60342969 (or 60342967 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The spelling of 20516600620 in words is "twenty billion, five hundred sixteen million, six hundred thousand, six hundred twenty".