61645651412413 has 8 divisors (see below), whose sum is σ = 63058379359232. Its totient is φ = 60247412983296.

The previous prime is 61645651412383. The next prime is 61645651412461. The reversal of 61645651412413 is 31421415654616.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61645651412413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61645651412483) 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, 3622370820 + ... + 3622387837.

It is an arithmetic number, because the mean of its divisors is an integer number (7882297419904).

Almost surely, 2^{61645651412413} is an apocalyptic number.

It is an amenable number.

61645651412413 is a deficient number, since it is larger than the sum of its proper divisors (1412727946819).

61645651412413 is a wasteful number, since it uses less digits than its factorization.

61645651412413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7244758851.

The product of its digits is 2073600, while the sum is 49.

The spelling of 61645651412413 in words is "sixty-one trillion, six hundred forty-five billion, six hundred fifty-one million, four hundred twelve thousand, four hundred thirteen".