61873566141 has 4 divisors (see below), whose sum is σ = 82498088192. Its totient is φ = 41249044092.

The previous prime is 61873566119. The next prime is 61873566143. The reversal of 61873566141 is 14166537816.

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 61873566141 - 2⁵ = 61873566109 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61873566143) 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, 10312261021 + ... + 10312261026.

It is an arithmetic number, because the mean of its divisors is an integer number (20624522048).

Almost surely, 2^61873566141 is an apocalyptic number.

It is an amenable number.

61873566141 is a deficient number, since it is larger than the sum of its proper divisors (20624522051).

61873566141 is a wasteful number, since it uses less digits than its factorization.

61873566141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20624522050.

The product of its digits is 725760, while the sum is 48.

The spelling of 61873566141 in words is "sixty-one billion, eight hundred seventy-three million, five hundred sixty-six thousand, one hundred forty-one".