61656075743 has 16 divisors (see below), whose sum is σ = 62772019200. Its totient is φ = 60547488960.

The previous prime is 61656075737. The next prime is 61656075751. The reversal of 61656075743 is 34757065616.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61656075743 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61656075691 and 61656075700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61656075713) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35050898 + ... + 35052656.

It is an arithmetic number, because the mean of its divisors is an integer number (3923251200).

Almost surely, 2^61656075743 is an apocalyptic number.

61656075743 is a deficient number, since it is larger than the sum of its proper divisors (1115943457).

61656075743 is a wasteful number, since it uses less digits than its factorization.

61656075743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3502.

The product of its (nonzero) digits is 3175200, while the sum is 50.

The spelling of 61656075743 in words is "sixty-one billion, six hundred fifty-six million, seventy-five thousand, seven hundred forty-three".