122615553513 has 4 divisors (see below), whose sum is σ = 163487404688. Its totient is φ = 81743702340.

The previous prime is 122615553509. The next prime is 122615553521. The reversal of 122615553513 is 315355516221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 122615553513 - 2² = 122615553509 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (122615553503) 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, 20435925583 + ... + 20435925588.

It is an arithmetic number, because the mean of its divisors is an integer number (40871851172).

Almost surely, 2^122615553513 is an apocalyptic number.

It is an amenable number.

122615553513 is a deficient number, since it is larger than the sum of its proper divisors (40871851175).

122615553513 is an equidigital number, since it uses as much as digits as its factorization.

122615553513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40871851174.

The product of its digits is 135000, while the sum is 39.

The spelling of 122615553513 in words is "one hundred twenty-two billion, six hundred fifteen million, five hundred fifty-three thousand, five hundred thirteen".