61177267713 has 4 divisors (see below), whose sum is σ = 81569690288. Its totient is φ = 40784845140.

The previous prime is 61177267709. The next prime is 61177267717. The reversal of 61177267713 is 31776277116.

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 an interprime number because it is at equal distance from previous prime (61177267709) and next prime (61177267717).

It is not a de Polignac number, because 61177267713 - 2² = 61177267709 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (61177267717) 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, 10196211283 + ... + 10196211288.

It is an arithmetic number, because the mean of its divisors is an integer number (20392422572).

Almost surely, 2^61177267713 is an apocalyptic number.

It is an amenable number.

61177267713 is a deficient number, since it is larger than the sum of its proper divisors (20392422575).

61177267713 is a wasteful number, since it uses less digits than its factorization.

61177267713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20392422574.

The product of its digits is 518616, while the sum is 48.

The spelling of 61177267713 in words is "sixty-one billion, one hundred seventy-seven million, two hundred sixty-seven thousand, seven hundred thirteen".