21772693701 has 16 divisors (see below), whose sum is σ = 35188192320. Its totient is φ = 13195571760.

The previous prime is 21772693687. The next prime is 21772693703. The reversal of 21772693701 is 10739627712.

21772693701 is a `hidden beast` number, since 2 + 17 + 7 + 269 + 370 + 1 = 666.

It is not a de Polignac number, because 21772693701 - 2²⁶ = 21705584837 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21772693703) 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, 36654070 + ... + 36654663.

It is an arithmetic number, because the mean of its divisors is an integer number (2199262020).

Almost surely, 2^21772693701 is an apocalyptic number.

It is an amenable number.

21772693701 is a deficient number, since it is larger than the sum of its proper divisors (13415498619).

21772693701 is a wasteful number, since it uses less digits than its factorization.

21772693701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73308753 (or 73308747 counting only the distinct ones).

The product of its (nonzero) digits is 222264, while the sum is 45.

The spelling of 21772693701 in words is "twenty-one billion, seven hundred seventy-two million, six hundred ninety-three thousand, seven hundred one".