84438267323990 has 16 divisors (see below), whose sum is σ = 152006425940448. Its totient is φ = 33771408094656.

The previous prime is 84438267323989. The next prime is 84438267324023. The reversal of 84438267323990 is 9932376283448.

It is a self number, because there is not a number n which added to its sum of digits gives 84438267323990.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 487263407 + ... + 487436666.

It is an arithmetic number, because the mean of its divisors is an integer number (9500401621278).

Almost surely, 2^{84438267323990} is an apocalyptic number.

84438267323990 is a deficient number, since it is larger than the sum of its proper divisors (67568158616458).

84438267323990 is a wasteful number, since it uses less digits than its factorization.

84438267323990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 974708743.

The product of its (nonzero) digits is 376233984, while the sum is 68.

The spelling of 84438267323990 in words is "eighty-four trillion, four hundred thirty-eight billion, two hundred sixty-seven million, three hundred twenty-three thousand, nine hundred ninety".