20720101941 has 64 divisors (see below), whose sum is σ = 38321203200. Its totient is φ = 10749542400.

The previous prime is 20720101937. The next prime is 20720101973. The reversal of 20720101941 is 14910102702.

It is not a de Polignac number, because 20720101941 - 2² = 20720101937 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20720101921) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1679925 + ... + 1692213.

It is an arithmetic number, because the mean of its divisors is an integer number (598768800).

Almost surely, 2^20720101941 is an apocalyptic number.

20720101941 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20720101941 is a deficient number, since it is larger than the sum of its proper divisors (17601101259).

20720101941 is a wasteful number, since it uses less digits than its factorization.

20720101941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13127 (or 13121 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The spelling of 20720101941 in words is "twenty billion, seven hundred twenty million, one hundred one thousand, nine hundred forty-one".