84867750621 has 32 divisors (see below), whose sum is σ = 126569329920. Its totient is φ = 56202043392.

The previous prime is 84867750619. The next prime is 84867750629. The reversal of 84867750621 is 12605776848.

84867750621 is a `hidden beast` number, since 8 + 4 + 8 + 6 + 7 + 7 + 5 + 0 + 621 = 666.

It is not a de Polignac number, because 84867750621 - 2¹ = 84867750619 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84867750629) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2489725 + ... + 2523581.

It is an arithmetic number, because the mean of its divisors is an integer number (3955291560).

Almost surely, 2^84867750621 is an apocalyptic number.

It is an amenable number.

84867750621 is a deficient number, since it is larger than the sum of its proper divisors (41701579299).

84867750621 is a wasteful number, since it uses less digits than its factorization.

84867750621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34482 (or 34476 counting only the distinct ones).

The product of its (nonzero) digits is 4515840, while the sum is 54.

The spelling of 84867750621 in words is "eighty-four billion, eight hundred sixty-seven million, seven hundred fifty thousand, six hundred twenty-one".