61339056747 has 32 divisors (see below), whose sum is σ = 83017267200. Its totient is φ = 40282988928.

The previous prime is 61339056739. The next prime is 61339056811. The reversal of 61339056747 is 74765093316.

It is not a de Polignac number, because 61339056747 - 2³ = 61339056739 is a prime.

It is a super-2 number, since 2×61339056747² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 61339056747.

It is not an unprimeable number, because it can be changed into a prime (61339016747) 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 31 ways as a sum of consecutive naturals, for example, 27419113 + ... + 27421349.

It is an arithmetic number, because the mean of its divisors is an integer number (2594289600).

Almost surely, 2^61339056747 is an apocalyptic number.

61339056747 is a deficient number, since it is larger than the sum of its proper divisors (21678210453).

61339056747 is a wasteful number, since it uses less digits than its factorization.

61339056747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2875.

The product of its (nonzero) digits is 2857680, while the sum is 51.

The spelling of 61339056747 in words is "sixty-one billion, three hundred thirty-nine million, fifty-six thousand, seven hundred forty-seven".