126604691627 has 4 divisors (see below), whose sum is σ = 126605472840. Its totient is φ = 126603910416.

The previous prime is 126604691611. The next prime is 126604691639. The reversal of 126604691627 is 726196406621.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 126604691627 - 2⁴ = 126604691611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126604691657) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46418 + ... + 505335.

It is an arithmetic number, because the mean of its divisors is an integer number (31651368210).

Almost surely, 2^126604691627 is an apocalyptic number.

126604691627 is a deficient number, since it is larger than the sum of its proper divisors (781213).

126604691627 is an equidigital number, since it uses as much as digits as its factorization.

126604691627 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 781212.

The product of its (nonzero) digits is 1306368, while the sum is 50.

The spelling of 126604691627 in words is "one hundred twenty-six billion, six hundred four million, six hundred ninety-one thousand, six hundred twenty-seven".