21976717274 has 8 divisors (see below), whose sum is σ = 33183388128. Its totient is φ = 10915587900.

The previous prime is 21976717271. The next prime is 21976717297. The reversal of 21976717274 is 47271767912.

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

It is a super-2 number, since 2×21976717274² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21976717271) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36384992 + ... + 36385595.

It is an arithmetic number, because the mean of its divisors is an integer number (4147923516).

Almost surely, 2^21976717274 is an apocalyptic number.

21976717274 is a deficient number, since it is larger than the sum of its proper divisors (11206670854).

21976717274 is a wasteful number, since it uses less digits than its factorization.

21976717274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72770740.

The product of its digits is 2074464, while the sum is 53.

The spelling of 21976717274 in words is "twenty-one billion, nine hundred seventy-six million, seven hundred seventeen thousand, two hundred seventy-four".