122750726651 has 4 divisors (see below), whose sum is σ = 140286544752. Its totient is φ = 105214908552.

The previous prime is 122750726641. The next prime is 122750726653. The reversal of 122750726651 is 156627057221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 156627057221 = 131 ⋅1195626391.

It is a cyclic number.

It is not a de Polignac number, because 122750726651 - 2¹⁰ = 122750725627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122750726653) 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, 8767909040 + ... + 8767909053.

It is an arithmetic number, because the mean of its divisors is an integer number (35071636188).

Almost surely, 2^122750726651 is an apocalyptic number.

122750726651 is a deficient number, since it is larger than the sum of its proper divisors (17535818101).

122750726651 is an equidigital number, since it uses as much as digits as its factorization.

122750726651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17535818100.

The product of its (nonzero) digits is 352800, while the sum is 44.

The spelling of 122750726651 in words is "one hundred twenty-two billion, seven hundred fifty million, seven hundred twenty-six thousand, six hundred fifty-one".