21887976046 has 8 divisors (see below), whose sum is σ = 33530516640. Its totient is φ = 10711137168.

The previous prime is 21887976043. The next prime is 21887976049. The reversal of 21887976046 is 64067978812.

It is an interprime number because it is at equal distance from previous prime (21887976043) and next prime (21887976049).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21887976043) 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, 116425311 + ... + 116425498.

It is an arithmetic number, because the mean of its divisors is an integer number (4191314580).

Almost surely, 2^21887976046 is an apocalyptic number.

21887976046 is a deficient number, since it is larger than the sum of its proper divisors (11642540594).

21887976046 is a wasteful number, since it uses less digits than its factorization.

21887976046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232850858.

The product of its (nonzero) digits is 8128512, while the sum is 58.

The spelling of 21887976046 in words is "twenty-one billion, eight hundred eighty-seven million, nine hundred seventy-six thousand, forty-six".