61607056747 has 2 divisors, whose sum is σ = 61607056748. Its totient is φ = 61607056746.

The previous prime is 61607056723. The next prime is 61607056799. The reversal of 61607056747 is 74765070616.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61607056747 - 2¹¹ = 61607054699 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61607056747.

It is not a weakly prime, because it can be changed into another prime (61607056547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30803528373 + 30803528374.

It is an arithmetic number, because the mean of its divisors is an integer number (30803528374).

Almost surely, 2^61607056747 is an apocalyptic number.

61607056747 is a deficient number, since it is larger than the sum of its proper divisors (1).

61607056747 is an equidigital number, since it uses as much as digits as its factorization.

61607056747 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1481760, while the sum is 49.

The spelling of 61607056747 in words is "sixty-one billion, six hundred seven million, fifty-six thousand, seven hundred forty-seven".