1557450663215 has 16 divisors (see below), whose sum is σ = 1978920629280. Its totient is φ = 1172643763200.

The previous prime is 1557450663211. The next prime is 1557450663217. The reversal of 1557450663215 is 5123660547551.

It is not a de Polignac number, because 1557450663215 - 2² = 1557450663211 is a prime.

It is a super-3 number, since 3×1557450663215³ (a number of 38 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1557450663211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4473296 + ... + 4808874.

It is an arithmetic number, because the mean of its divisors is an integer number (123682539330).

Almost surely, 2^{1557450663215} is an apocalyptic number.

1557450663215 is a deficient number, since it is larger than the sum of its proper divisors (421469966065).

1557450663215 is a wasteful number, since it uses less digits than its factorization.

1557450663215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390202.

The product of its (nonzero) digits is 3780000, while the sum is 50.

The spelling of 1557450663215 in words is "one trillion, five hundred fifty-seven billion, four hundred fifty million, six hundred sixty-three thousand, two hundred fifteen".