83544385990 has 16 divisors (see below), whose sum is σ = 161947579248. Its totient is φ = 30847157856.

The previous prime is 83544385943. The next prime is 83544386027. The reversal of 83544385990 is 9958344538.

It is a super-2 number, since 2×83544385990² (a number of 23 digits) contains 22 as substring.

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, 321324432 + ... + 321324691.

It is an arithmetic number, because the mean of its divisors is an integer number (10121723703).

Almost surely, 2^83544385990 is an apocalyptic number.

83544385990 is a deficient number, since it is larger than the sum of its proper divisors (78403193258).

83544385990 is a wasteful number, since it uses less digits than its factorization.

83544385990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642649143.

The product of its (nonzero) digits is 18662400, while the sum is 58.

The spelling of 83544385990 in words is "eighty-three billion, five hundred forty-four million, three hundred eighty-five thousand, nine hundred ninety".