61750877407 has 2 divisors, whose sum is σ = 61750877408. Its totient is φ = 61750877406.

The previous prime is 61750877381. The next prime is 61750877417. The reversal of 61750877407 is 70477805716.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61750877407 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61750877417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30875438703 + 30875438704.

It is an arithmetic number, because the mean of its divisors is an integer number (30875438704).

Almost surely, 2^61750877407 is an apocalyptic number.

61750877407 is a deficient number, since it is larger than the sum of its proper divisors (1).

61750877407 is an equidigital number, since it uses as much as digits as its factorization.

61750877407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304960, while the sum is 52.

The spelling of 61750877407 in words is "sixty-one billion, seven hundred fifty million, eight hundred seventy-seven thousand, four hundred seven".