61047314791 has 4 divisors (see below), whose sum is σ = 61103168872. Its totient is φ = 60991460712.

The previous prime is 61047314753. The next prime is 61047314821. The reversal of 61047314791 is 19741374016.

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

It is a cyclic number.

It is not a de Polignac number, because 61047314791 - 2¹³ = 61047306599 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 (61047314191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27925401 + ... + 27927586.

It is an arithmetic number, because the mean of its divisors is an integer number (15275792218).

Almost surely, 2^61047314791 is an apocalyptic number.

61047314791 is a deficient number, since it is larger than the sum of its proper divisors (55854081).

61047314791 is a wasteful number, since it uses less digits than its factorization.

61047314791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55854080.

The product of its (nonzero) digits is 127008, while the sum is 43.

The spelling of 61047314791 in words is "sixty-one billion, forty-seven million, three hundred fourteen thousand, seven hundred ninety-one".