104620671787 has 4 divisors (see below), whose sum is σ = 104693376960. Its totient is φ = 104547966616.

The previous prime is 104620671769. The next prime is 104620671791. The reversal of 104620671787 is 787176026401.

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-104620671787 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 104620671787.

It is not an unprimeable number, because it can be changed into a prime (104620671187) 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, 36350428 + ... + 36353305.

It is an arithmetic number, because the mean of its divisors is an integer number (26173344240).

Almost surely, 2^104620671787 is an apocalyptic number.

104620671787 is a deficient number, since it is larger than the sum of its proper divisors (72705173).

104620671787 is an equidigital number, since it uses as much as digits as its factorization.

104620671787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72705172.

The product of its (nonzero) digits is 790272, while the sum is 49.

The spelling of 104620671787 in words is "one hundred four billion, six hundred twenty million, six hundred seventy-one thousand, seven hundred eighty-seven".