61345892037 has 4 divisors (see below), whose sum is σ = 81794522720. Its totient is φ = 40897261356.

The previous prime is 61345892009. The next prime is 61345892051. The reversal of 61345892037 is 73029854316.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 61345892037 - 2³⁵ = 26986153669 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 (61345892087) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10224315337 + ... + 10224315342.

It is an arithmetic number, because the mean of its divisors is an integer number (20448630680).

It is a 1-persistent number, because it is pandigital, but 2⋅61345892037 = 122691784074 is not.

Almost surely, 2^61345892037 is an apocalyptic number.

It is an amenable number.

61345892037 is a deficient number, since it is larger than the sum of its proper divisors (20448630683).

61345892037 is a wasteful number, since it uses less digits than its factorization.

61345892037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20448630682.

The product of its (nonzero) digits is 1088640, while the sum is 48.

The spelling of 61345892037 in words is "sixty-one billion, three hundred forty-five million, eight hundred ninety-two thousand, thirty-seven".