126516403775 has 12 divisors (see below), whose sum is σ = 156906118824. Its totient is φ = 101196492000.

The previous prime is 126516403757. The next prime is 126516403781. The reversal of 126516403775 is 577304615621.

It is not a de Polignac number, because 126516403775 - 2¹⁶ = 126516338239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 259436 + ... + 565985.

It is an arithmetic number, because the mean of its divisors is an integer number (13075509902).

Almost surely, 2^126516403775 is an apocalyptic number.

126516403775 is a deficient number, since it is larger than the sum of its proper divisors (30389715049).

126516403775 is an equidigital number, since it uses as much as digits as its factorization.

126516403775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 831562 (or 831557 counting only the distinct ones).

The product of its (nonzero) digits is 1058400, while the sum is 47.

The spelling of 126516403775 in words is "one hundred twenty-six billion, five hundred sixteen million, four hundred three thousand, seven hundred seventy-five".