104020556301261 has 48 divisors (see below), whose sum is σ = 164207746160640. Its totient is φ = 65621064412080.

The previous prime is 104020556301257. The next prime is 104020556301269. The reversal of 104020556301261 is 162103655020401.

104020556301261 is a `hidden beast` number, since 1 + 0 + 4 + 0 + 2 + 0 + 5 + 5 + 630 + 12 + 6 + 1 = 666.

It is not a de Polignac number, because 104020556301261 - 2² = 104020556301257 is a prime.

It is a super-2 number, since 2×104020556301261² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104020556301269) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9068775 + ... + 17037716.

It is an arithmetic number, because the mean of its divisors is an integer number (3420994711680).

Almost surely, 2^{104020556301261} is an apocalyptic number.

It is an amenable number.

104020556301261 is a deficient number, since it is larger than the sum of its proper divisors (60187189859379).

104020556301261 is an equidigital number, since it uses as much as digits as its factorization.

104020556301261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26107388 (or 26107376 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The spelling of 104020556301261 in words is "one hundred four trillion, twenty billion, five hundred fifty-six million, three hundred one thousand, two hundred sixty-one".