122746136457 has 12 divisors (see below), whose sum is σ = 190381762896. Its totient is φ = 70140649320.

The previous prime is 122746136423. The next prime is 122746136503. The reversal of 122746136457 is 754631647221.

It is not a de Polignac number, because 122746136457 - 2⁶ = 122746136393 is a prime.

It is a super-2 number, since 2×122746136457² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (122746136417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 417503719 + ... + 417504012.

It is an arithmetic number, because the mean of its divisors is an integer number (15865146908).

Almost surely, 2^122746136457 is an apocalyptic number.

It is an amenable number.

122746136457 is a deficient number, since it is larger than the sum of its proper divisors (67635626439).

122746136457 is an equidigital number, since it uses as much as digits as its factorization.

122746136457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 835007748 (or 835007741 counting only the distinct ones).

The product of its digits is 1693440, while the sum is 48.

The spelling of 122746136457 in words is "one hundred twenty-two billion, seven hundred forty-six million, one hundred thirty-six thousand, four hundred fifty-seven".