61725704507447 has 2 divisors, whose sum is σ = 61725704507448. Its totient is φ = 61725704507446.

The previous prime is 61725704507443. The next prime is 61725704507461. The reversal of 61725704507447 is 74470540752716.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61725704507447 - 2² = 61725704507443 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61725704507443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30862852253723 + 30862852253724.

It is an arithmetic number, because the mean of its divisors is an integer number (30862852253724).

Almost surely, 2^{61725704507447} is an apocalyptic number.

61725704507447 is a deficient number, since it is larger than the sum of its proper divisors (1).

61725704507447 is an equidigital number, since it uses as much as digits as its factorization.

61725704507447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46099200, while the sum is 59.

The spelling of 61725704507447 in words is "sixty-one trillion, seven hundred twenty-five billion, seven hundred four million, five hundred seven thousand, four hundred forty-seven".