20508371462616 has 64 divisors (see below), whose sum is σ = 51633740582400. Its totient is φ = 6787827381888.

The previous prime is 20508371462599. The next prime is 20508371462617. The reversal of 20508371462616 is 61626417380502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20508371462617) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1729905 + ... + 6633951.

It is an arithmetic number, because the mean of its divisors is an integer number (806777196600).

Almost surely, 2^{20508371462616} is an apocalyptic number.

It is an amenable number.

20508371462616 is an abundant number, since it is smaller than the sum of its proper divisors (31125369119784).

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

20508371462616 is a wasteful number, since it uses less digits than its factorization.

20508371462616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4905288 (or 4905284 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 51.

The spelling of 20508371462616 in words is "twenty trillion, five hundred eight billion, three hundred seventy-one million, four hundred sixty-two thousand, six hundred sixteen".