61641517213475 has 6 divisors (see below), whose sum is σ = 76435481344740. Its totient is φ = 49313213770760.

The previous prime is 61641517213363. The next prime is 61641517213501. The reversal of 61641517213475 is 57431271514616.

It is not a de Polignac number, because 61641517213475 - 2¹⁶ = 61641517147939 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1232830344245 + ... + 1232830344294.

It is an arithmetic number, because the mean of its divisors is an integer number (12739246890790).

Almost surely, 2^{61641517213475} is an apocalyptic number.

61641517213475 is a deficient number, since it is larger than the sum of its proper divisors (14793964131265).

61641517213475 is a wasteful number, since it uses less digits than its factorization.

61641517213475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2465660688549 (or 2465660688544 counting only the distinct ones).

The product of its digits is 4233600, while the sum is 53.

The spelling of 61641517213475 in words is "sixty-one trillion, six hundred forty-one billion, five hundred seventeen million, two hundred thirteen thousand, four hundred seventy-five".