915750091969 has 2 divisors, whose sum is σ = 915750091970. Its totient is φ = 915750091968.

The previous prime is 915750091961. The next prime is 915750091987. The reversal of 915750091969 is 969190057519.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 619269841969 + 296480250000 = 786937^2 + 544500^2 .

It is a cyclic number.

It is not a de Polignac number, because 915750091969 - 2³ = 915750091961 is a prime.

It is a super-2 number, since 2×915750091969² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (915750091961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 457875045984 + 457875045985.

It is an arithmetic number, because the mean of its divisors is an integer number (457875045985).

Almost surely, 2^915750091969 is an apocalyptic number.

It is an amenable number.

915750091969 is a deficient number, since it is larger than the sum of its proper divisors (1).

915750091969 is an equidigital number, since it uses as much as digits as its factorization.

915750091969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6889050, while the sum is 61.

The spelling of 915750091969 in words is "nine hundred fifteen billion, seven hundred fifty million, ninety-one thousand, nine hundred sixty-nine".