61572751373847 has 32 divisors (see below), whose sum is σ = 98802705576960. Its totient is φ = 33345913075200.

The previous prime is 61572751373797. The next prime is 61572751373911. The reversal of 61572751373847 is 74837315727516.

It is a happy number.

It is not a de Polignac number, because 61572751373847 - 2¹⁰ = 61572751372823 is a prime.

It is a super-4 number, since 4×61572751373847⁴ (a number of 56 digits) contains 4444 as substring.

It is a Smith number, since the sum of its digits (66) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61572751371847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 584717154 + ... + 584822447.

It is an arithmetic number, because the mean of its divisors is an integer number (3087584549280).

Almost surely, 2^{61572751373847} is an apocalyptic number.

61572751373847 is a deficient number, since it is larger than the sum of its proper divisors (37229954203113).

61572751373847 is a wasteful number, since it uses less digits than its factorization.

61572751373847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1169539743.

The product of its digits is 207446400, while the sum is 66.

The spelling of 61572751373847 in words is "sixty-one trillion, five hundred seventy-two billion, seven hundred fifty-one million, three hundred seventy-three thousand, eight hundred forty-seven".