7407861806681 has 8 divisors (see below), whose sum is σ = 8466202116480. Its totient is φ = 6349540081248.

The previous prime is 7407861806651. The next prime is 7407861806689. The reversal of 7407861806681 is 1866081687047.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7407861806681 - 2²⁶ = 7407794697817 is a prime.

It is a super-2 number, since 2×7407861806681² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7407861806689) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3781196 + ... + 5395661.

It is an arithmetic number, because the mean of its divisors is an integer number (1058275264560).

Almost surely, 2^{7407861806681} is an apocalyptic number.

It is an amenable number.

7407861806681 is a deficient number, since it is larger than the sum of its proper divisors (1058340309799).

7407861806681 is a wasteful number, since it uses less digits than its factorization.

7407861806681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9292183.

The product of its (nonzero) digits is 21676032, while the sum is 62.

The spelling of 7407861806681 in words is "seven trillion, four hundred seven billion, eight hundred sixty-one million, eight hundred six thousand, six hundred eighty-one".