104643187631 has 2 divisors, whose sum is σ = 104643187632. Its totient is φ = 104643187630.

The previous prime is 104643187609. The next prime is 104643187637. The reversal of 104643187631 is 136781346401.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 104643187631 - 2⁶ = 104643187567 is a prime.

It is a super-2 number, since 2×104643187631² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (104643187637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52321593815 + 52321593816.

It is an arithmetic number, because the mean of its divisors is an integer number (52321593816).

Almost surely, 2^104643187631 is an apocalyptic number.

104643187631 is a deficient number, since it is larger than the sum of its proper divisors (1).

104643187631 is an equidigital number, since it uses as much as digits as its factorization.

104643187631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 290304, while the sum is 44.

The spelling of 104643187631 in words is "one hundred four billion, six hundred forty-three million, one hundred eighty-seven thousand, six hundred thirty-one".