21954041307 has 56 divisors (see below), whose sum is σ = 36239245680. Its totient is φ = 13182886080.

The previous prime is 21954041299. The next prime is 21954041363. The reversal of 21954041307 is 70314045912.

21954041307 is a `hidden beast` number, since 219 + 5 + 404 + 1 + 30 + 7 = 666.

It is not a de Polignac number, because 21954041307 - 2³ = 21954041299 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21954041407) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 861513 + ... + 886629.

Almost surely, 2^21954041307 is an apocalyptic number.

21954041307 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

21954041307 is a deficient number, since it is larger than the sum of its proper divisors (14285204373).

21954041307 is a wasteful number, since it uses less digits than its factorization.

21954041307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25255 (or 25240 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The spelling of 21954041307 in words is "twenty-one billion, nine hundred fifty-four million, forty-one thousand, three hundred seven".