15120220373 has 2 divisors, whose sum is σ = 15120220374. Its totient is φ = 15120220372.

The previous prime is 15120220337. The next prime is 15120220391. The reversal of 15120220373 is 37302202151.

Together with previous prime (15120220337) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12165428209 + 2954792164 = 110297^2 + 54358^2 .

It is a cyclic number.

It is not a de Polignac number, because 15120220373 - 2²⁶ = 15053111509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15120220873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7560110186 + 7560110187.

It is an arithmetic number, because the mean of its divisors is an integer number (7560110187).

Almost surely, 2^15120220373 is an apocalyptic number.

It is an amenable number.

15120220373 is a deficient number, since it is larger than the sum of its proper divisors (1).

15120220373 is an equidigital number, since it uses as much as digits as its factorization.

15120220373 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2520, while the sum is 26.

The spelling of 15120220373 in words is "fifteen billion, one hundred twenty million, two hundred twenty thousand, three hundred seventy-three".