104311927821 has 16 divisors (see below), whose sum is σ = 140501703744. Its totient is φ = 68834646144.

The previous prime is 104311927813. The next prime is 104311927829. The reversal of 104311927821 is 128729113401.

It is an interprime number because it is at equal distance from previous prime (104311927813) and next prime (104311927829).

It is not a de Polignac number, because 104311927821 - 2³ = 104311927813 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 104311927821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104311927829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 223090 + ... + 508323.

It is an arithmetic number, because the mean of its divisors is an integer number (8781356484).

Almost surely, 2^104311927821 is an apocalyptic number.

It is an amenable number.

104311927821 is a deficient number, since it is larger than the sum of its proper divisors (36189775923).

104311927821 is a wasteful number, since it uses less digits than its factorization.

104311927821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 731900.

The product of its (nonzero) digits is 24192, while the sum is 39.

The spelling of 104311927821 in words is "one hundred four billion, three hundred eleven million, nine hundred twenty-seven thousand, eight hundred twenty-one".