83487257798 has 16 divisors (see below), whose sum is σ = 146166142464. Its totient is φ = 35018971080.

The previous prime is 83487257767. The next prime is 83487257921. The reversal of 83487257798 is 89775278438.

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, 63439508 + ... + 63440823.

It is an arithmetic number, because the mean of its divisors is an integer number (9135383904).

Almost surely, 2^83487257798 is an apocalyptic number.

83487257798 is a deficient number, since it is larger than the sum of its proper divisors (62678884666).

83487257798 is a wasteful number, since it uses less digits than its factorization.

83487257798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126880387.

The product of its digits is 189665280, while the sum is 68.

The spelling of 83487257798 in words is "eighty-three billion, four hundred eighty-seven million, two hundred fifty-seven thousand, seven hundred ninety-eight".