104987642983 has 4 divisors (see below), whose sum is σ = 105093585088. Its totient is φ = 104881700880.

The previous prime is 104987642953. The next prime is 104987642993. The reversal of 104987642983 is 389246789401.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-104987642983 is a prime.

It is a super-2 number, since 2×104987642983² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104987642933) 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, 52969566 + ... + 52971547.

It is an arithmetic number, because the mean of its divisors is an integer number (26273396272).

Almost surely, 2^104987642983 is an apocalyptic number.

104987642983 is a deficient number, since it is larger than the sum of its proper divisors (105942105).

104987642983 is an equidigital number, since it uses as much as digits as its factorization.

104987642983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105942104.

The product of its (nonzero) digits is 20901888, while the sum is 61.

The spelling of 104987642983 in words is "one hundred four billion, nine hundred eighty-seven million, six hundred forty-two thousand, nine hundred eighty-three".