20131966680 has 128 divisors (see below), whose sum is σ = 71250554880. Its totient is φ = 4453148160.

The previous prime is 20131966669. The next prime is 20131966693. The reversal of 20131966680 is 8666913102.

It is a super-3 number, since 3×20131966680³ (a number of 32 digits) contains 333 as substring.

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

It is a congruent number.

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, 360519 + ... + 412598.

It is an arithmetic number, because the mean of its divisors is an integer number (556644960).

Almost surely, 2^20131966680 is an apocalyptic number.

20131966680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20131966680 is an abundant number, since it is smaller than the sum of its proper divisors (51118588200).

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

20131966680 is a wasteful number, since it uses less digits than its factorization.

20131966680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 773169 (or 773165 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 42.

The spelling of 20131966680 in words is "twenty billion, one hundred thirty-one million, nine hundred sixty-six thousand, six hundred eighty".