10040920351581 has 64 divisors (see below), whose sum is σ = 15692013363200. Its totient is φ = 5708581583040.

The previous prime is 10040920351541. The next prime is 10040920351589. The reversal of 10040920351581 is 18515302904001.

It is not a de Polignac number, because 10040920351581 - 2⁹ = 10040920351069 is a prime.

It is a super-2 number, since 2×10040920351581² (a number of 27 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 (10040920351589) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 204379086 + ... + 204428208.

It is an arithmetic number, because the mean of its divisors is an integer number (245187708800).

Almost surely, 2^{10040920351581} is an apocalyptic number.

It is an amenable number.

10040920351581 is a deficient number, since it is larger than the sum of its proper divisors (5651093011619).

10040920351581 is an equidigital number, since it uses as much as digits as its factorization.

10040920351581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50151 (or 50137 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 39.

The spelling of 10040920351581 in words is "ten trillion, forty billion, nine hundred twenty million, three hundred fifty-one thousand, five hundred eighty-one".