21714177157 has 8 divisors (see below), whose sum is σ = 23210913600. Its totient is φ = 20263494240.

The previous prime is 21714177139. The next prime is 21714177169. The reversal of 21714177157 is 75177141712.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21714177157 - 2⁷ = 21714177029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21744177157) 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, 11512407 + ... + 11514292.

It is an arithmetic number, because the mean of its divisors is an integer number (2901364200).

Almost surely, 2^21714177157 is an apocalyptic number.

It is an amenable number.

21714177157 is a deficient number, since it is larger than the sum of its proper divisors (1496736443).

21714177157 is a wasteful number, since it uses less digits than its factorization.

21714177157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23026763.

The product of its digits is 96040, while the sum is 43.

The spelling of 21714177157 in words is "twenty-one billion, seven hundred fourteen million, one hundred seventy-seven thousand, one hundred fifty-seven".