61426683631 has 8 divisors (see below), whose sum is σ = 64728399600. Its totient is φ = 58131840960.

The previous prime is 61426683623. The next prime is 61426683641. The reversal of 61426683631 is 13638662416.

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

It is a cyclic number.

It is not a de Polignac number, because 61426683631 - 2³ = 61426683623 is a prime.

It is a super-2 number, since 2×61426683631² (a number of 22 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 (61426683641) 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, 1699966 + ... + 1735723.

It is an arithmetic number, because the mean of its divisors is an integer number (8091049950).

Almost surely, 2^61426683631 is an apocalyptic number.

61426683631 is a deficient number, since it is larger than the sum of its proper divisors (3301715969).

61426683631 is a wasteful number, since it uses less digits than its factorization.

61426683631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3436649.

The product of its digits is 746496, while the sum is 46.

The spelling of 61426683631 in words is "sixty-one billion, four hundred twenty-six million, six hundred eighty-three thousand, six hundred thirty-one".