75993961957 has 2 divisors, whose sum is σ = 75993961958. Its totient is φ = 75993961956.

The previous prime is 75993961951. The next prime is 75993961961. The reversal of 75993961957 is 75916939957.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68895225441 + 7098736516 = 262479^2 + 84254^2 .

It is a cyclic number.

It is not a de Polignac number, because 75993961957 - 2¹⁵ = 75993929189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75993961951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37996980978 + 37996980979.

It is an arithmetic number, because the mean of its divisors is an integer number (37996980979).

Almost surely, 2^75993961957 is an apocalyptic number.

It is an amenable number.

75993961957 is a deficient number, since it is larger than the sum of its proper divisors (1).

75993961957 is an equidigital number, since it uses as much as digits as its factorization.

75993961957 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 144670050, while the sum is 70.

The spelling of 75993961957 in words is "seventy-five billion, nine hundred ninety-three million, nine hundred sixty-one thousand, nine hundred fifty-seven".