84614046921 has 24 divisors (see below), whose sum is σ = 125561519304. Its totient is φ = 54868181760.

The previous prime is 84614046917. The next prime is 84614046931. The reversal of 84614046921 is 12964041648.

84614046921 is a `hidden beast` number, since 8 + 4 + 614 + 0 + 4 + 6 + 9 + 21 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 28852419600 + 55761627321 = 169860^2 + 236139^2 .

It is not a de Polignac number, because 84614046921 - 2² = 84614046917 is a prime.

It is not an unprimeable number, because it can be changed into a prime (84614046911) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1115805 + ... + 1189221.

It is an arithmetic number, because the mean of its divisors is an integer number (5231729971).

Almost surely, 2^84614046921 is an apocalyptic number.

It is an amenable number.

84614046921 is a deficient number, since it is larger than the sum of its proper divisors (40947472383).

84614046921 is a wasteful number, since it uses less digits than its factorization.

84614046921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76921 (or 76918 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The spelling of 84614046921 in words is "eighty-four billion, six hundred fourteen million, forty-six thousand, nine hundred twenty-one".