21954332967 has 16 divisors (see below), whose sum is σ = 35422117632. Its totient is φ = 11807372160.

The previous prime is 21954332957. The next prime is 21954332977. The reversal of 21954332967 is 76923345912.

It is an interprime number because it is at equal distance from previous prime (21954332957) and next prime (21954332977).

It is not a de Polignac number, because 21954332967 - 2⁶ = 21954332903 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21954332957) 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, 30748009 + ... + 30748722.

It is an arithmetic number, because the mean of its divisors is an integer number (2213882352).

Almost surely, 2^21954332967 is an apocalyptic number.

21954332967 is a deficient number, since it is larger than the sum of its proper divisors (13467784665).

21954332967 is a wasteful number, since it uses less digits than its factorization.

21954332967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61496758.

The product of its digits is 2449440, while the sum is 51.

The spelling of 21954332967 in words is "twenty-one billion, nine hundred fifty-four million, three hundred thirty-two thousand, nine hundred sixty-seven".