15557119601 has 2 divisors, whose sum is σ = 15557119602. Its totient is φ = 15557119600.

The previous prime is 15557119561. The next prime is 15557119603. The reversal of 15557119601 is 10691175551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15012130576 + 544989025 = 122524^2 + 23345^2 .

It is a cyclic number.

It is not a de Polignac number, because 15557119601 - 2⁶ = 15557119537 is a prime.

Together with 15557119603, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (15557119603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7778559800 + 7778559801.

It is an arithmetic number, because the mean of its divisors is an integer number (7778559801).

Almost surely, 2^15557119601 is an apocalyptic number.

It is an amenable number.

15557119601 is a deficient number, since it is larger than the sum of its proper divisors (1).

15557119601 is an equidigital number, since it uses as much as digits as its factorization.

15557119601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 47250, while the sum is 41.

The spelling of 15557119601 in words is "fifteen billion, five hundred fifty-seven million, one hundred nineteen thousand, six hundred one".