20656150671 has 64 divisors (see below), whose sum is σ = 31473598464. Its totient is φ = 11959920000.

The previous prime is 20656150651. The next prime is 20656150693. The reversal of 20656150671 is 17605165602.

It is not a de Polignac number, because 20656150671 - 2¹⁸ = 20655888527 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20656150651) 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, 13047946 + ... + 13049528.

It is an arithmetic number, because the mean of its divisors is an integer number (491774976).

Almost surely, 2^20656150671 is an apocalyptic number.

20656150671 is a deficient number, since it is larger than the sum of its proper divisors (10817447793).

20656150671 is a wasteful number, since it uses less digits than its factorization.

20656150671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1924.

The product of its (nonzero) digits is 75600, while the sum is 39.

The spelling of 20656150671 in words is "twenty billion, six hundred fifty-six million, one hundred fifty thousand, six hundred seventy-one".