122641511553 has 12 divisors (see below), whose sum is σ = 193253291088. Its totient is φ = 74328188760.

The previous prime is 122641511549. The next prime is 122641511599. The reversal of 122641511553 is 355115146221.

122641511553 is a `hidden beast` number, since 1 + 2 + 2 + 641 + 5 + 1 + 1 + 5 + 5 + 3 = 666.

It is not a de Polignac number, because 122641511553 - 2² = 122641511549 is a prime.

It is not an unprimeable number, because it can be changed into a prime (122641511653) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 619401475 + ... + 619401672.

It is an arithmetic number, because the mean of its divisors is an integer number (16104440924).

Almost surely, 2^122641511553 is an apocalyptic number.

It is an amenable number.

122641511553 is a deficient number, since it is larger than the sum of its proper divisors (70611779535).

122641511553 is a wasteful number, since it uses less digits than its factorization.

122641511553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1238803164 (or 1238803161 counting only the distinct ones).

The product of its digits is 36000, while the sum is 36.

Adding to 122641511553 its reverse (355115146221), we get a palindrome (477756657774).

The spelling of 122641511553 in words is "one hundred twenty-two billion, six hundred forty-one million, five hundred eleven thousand, five hundred fifty-three".