21950960746 has 64 divisors (see below), whose sum is σ = 39604723200. Its totient is φ = 8991682560.

The previous prime is 21950960687. The next prime is 21950960771. The reversal of 21950960746 is 64706905912.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 21950960746.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6033640 + ... + 6037276.

It is an arithmetic number, because the mean of its divisors is an integer number (618823800).

Almost surely, 2^21950960746 is an apocalyptic number.

21950960746 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

21950960746 is a deficient number, since it is larger than the sum of its proper divisors (17653762454).

21950960746 is a wasteful number, since it uses less digits than its factorization.

21950960746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4159.

The product of its (nonzero) digits is 816480, while the sum is 49.

The spelling of 21950960746 in words is "twenty-one billion, nine hundred fifty million, nine hundred sixty thousand, seven hundred forty-six".