105257557499 has 2 divisors, whose sum is σ = 105257557500. Its totient is φ = 105257557498.

The previous prime is 105257557451. The next prime is 105257557529. The reversal of 105257557499 is 994755752501.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-105257557499 is a prime.

It is a super-2 number, since 2×105257557499² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (105257557099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52628778749 + 52628778750.

It is an arithmetic number, because the mean of its divisors is an integer number (52628778750).

Almost surely, 2^105257557499 is an apocalyptic number.

105257557499 is a deficient number, since it is larger than the sum of its proper divisors (1).

105257557499 is an equidigital number, since it uses as much as digits as its factorization.

105257557499 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19845000, while the sum is 59.

The spelling of 105257557499 in words is "one hundred five billion, two hundred fifty-seven million, five hundred fifty-seven thousand, four hundred ninety-nine".