84007936031421 has 4 divisors (see below), whose sum is σ = 112010581375232. Its totient is φ = 56005290687612.

The previous prime is 84007936031399. The next prime is 84007936031441. The reversal of 84007936031421 is 12413063970048.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 84007936031421 - 2⁵ = 84007936031389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84007936031441) 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, 14001322671901 + ... + 14001322671906.

It is an arithmetic number, because the mean of its divisors is an integer number (28002645343808).

Almost surely, 2^{84007936031421} is an apocalyptic number.

It is an amenable number.

84007936031421 is a deficient number, since it is larger than the sum of its proper divisors (28002645343811).

84007936031421 is a wasteful number, since it uses less digits than its factorization.

84007936031421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28002645343810.

The product of its (nonzero) digits is 870912, while the sum is 48.

The spelling of 84007936031421 in words is "eighty-four trillion, seven billion, nine hundred thirty-six million, thirty-one thousand, four hundred twenty-one".