1315612055557 has 8 divisors (see below), whose sum is σ = 1346339256416. Its totient is φ = 1284890835312.

The previous prime is 1315612055509. The next prime is 1315612055581. The reversal of 1315612055557 is 7555502165131.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1315612055557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1315612055507) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1048518 + ... + 1931479.

It is an arithmetic number, because the mean of its divisors is an integer number (168292407052).

Almost surely, 2^{1315612055557} is an apocalyptic number.

It is an amenable number.

1315612055557 is a deficient number, since it is larger than the sum of its proper divisors (30727200859).

1315612055557 is a wasteful number, since it uses less digits than its factorization.

1315612055557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2990307.

The product of its (nonzero) digits is 787500, while the sum is 46.

The spelling of 1315612055557 in words is "one trillion, three hundred fifteen billion, six hundred twelve million, fifty-five thousand, five hundred fifty-seven".