61645006424931 has 8 divisors (see below), whose sum is σ = 82213019518224. Its totient is φ = 41086832140800.

The previous prime is 61645006424929. The next prime is 61645006424933. The reversal of 61645006424931 is 13942460054616.

It is an interprime number because it is at equal distance from previous prime (61645006424929) and next prime (61645006424933).

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

It is not a de Polignac number, because 61645006424931 - 2¹ = 61645006424929 is a prime.

It is a super-2 number, since 2×61645006424931² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61645006424933) 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, 2459687670 + ... + 2459712731.

It is an arithmetic number, because the mean of its divisors is an integer number (10276627439778).

Almost surely, 2^{61645006424931} is an apocalyptic number.

61645006424931 is a deficient number, since it is larger than the sum of its proper divisors (20568013093293).

61645006424931 is a wasteful number, since it uses less digits than its factorization.

61645006424931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4919404581.

The product of its (nonzero) digits is 3732480, while the sum is 51.

The spelling of 61645006424931 in words is "sixty-one trillion, six hundred forty-five billion, six million, four hundred twenty-four thousand, nine hundred thirty-one".