61791475296 has 24 divisors (see below), whose sum is σ = 162202622904. Its totient is φ = 20597158400.

The previous prime is 61791475289. The next prime is 61791475303. The reversal of 61791475296 is 69257419716.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (61791475289) and next prime (61791475303).

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 321830505 + ... + 321830696.

It is an arithmetic number, because the mean of its divisors is an integer number (6758442621).

Almost surely, 2^61791475296 is an apocalyptic number.

It is an amenable number.

61791475296 is an abundant number, since it is smaller than the sum of its proper divisors (100411147608).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61791475296 is a wasteful number, since it uses less digits than its factorization.

61791475296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643661214 (or 643661206 counting only the distinct ones).

The product of its digits is 5715360, while the sum is 57.

The spelling of 61791475296 in words is "sixty-one billion, seven hundred ninety-one million, four hundred seventy-five thousand, two hundred ninety-six".