61328395075831 has 16 divisors (see below), whose sum is σ = 69523590838240. Its totient is φ = 53630133747840.

The previous prime is 61328395075817. The next prime is 61328395075867. The reversal of 61328395075831 is 13857059382316.

It is not a de Polignac number, because 61328395075831 - 2¹⁵ = 61328395043063 is a prime.

It is a super-2 number, since 2×61328395075831² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61328395075831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61328395075931) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8669581 + ... + 14064793.

It is an arithmetic number, because the mean of its divisors is an integer number (4345224427390).

Almost surely, 2^{61328395075831} is an apocalyptic number.

61328395075831 is a deficient number, since it is larger than the sum of its proper divisors (8195195762409).

61328395075831 is a wasteful number, since it uses less digits than its factorization.

61328395075831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5441266.

The product of its (nonzero) digits is 32659200, while the sum is 61.

The spelling of 61328395075831 in words is "sixty-one trillion, three hundred twenty-eight billion, three hundred ninety-five million, seventy-five thousand, eight hundred thirty-one".