61132807273 has 4 divisors (see below), whose sum is σ = 63240835140. Its totient is φ = 59024779408.

The previous prime is 61132807259. The next prime is 61132807297. The reversal of 61132807273 is 37270823116.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10776100864 + 50356706409 = 103808^2 + 224403^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61132807273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61132807973) 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, 1054013890 + ... + 1054013947.

It is an arithmetic number, because the mean of its divisors is an integer number (15810208785).

Almost surely, 2^61132807273 is an apocalyptic number.

It is an amenable number.

61132807273 is a deficient number, since it is larger than the sum of its proper divisors (2108027867).

61132807273 is a wasteful number, since it uses less digits than its factorization.

61132807273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2108027866.

The product of its (nonzero) digits is 84672, while the sum is 40.

The spelling of 61132807273 in words is "sixty-one billion, one hundred thirty-two million, eight hundred seven thousand, two hundred seventy-three".