1157638215513 has 16 divisors (see below), whose sum is σ = 1662801973056. Its totient is φ = 712156079040.

The previous prime is 1157638215511. The next prime is 1157638215563. The reversal of 1157638215513 is 3155128367511.

It is not a de Polignac number, because 1157638215513 - 2¹ = 1157638215511 is a prime.

It is a super-4 number, since 4×1157638215513⁴ (a number of 49 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (1157638215511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4811670 + ... + 5046527.

It is an arithmetic number, because the mean of its divisors is an integer number (103925123316).

Almost surely, 2^{1157638215513} is an apocalyptic number.

1157638215513 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1157638215513 is a deficient number, since it is larger than the sum of its proper divisors (505163757543).

1157638215513 is a wasteful number, since it uses less digits than its factorization.

1157638215513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9861224.

The product of its digits is 756000, while the sum is 48.

The spelling of 1157638215513 in words is "one trillion, one hundred fifty-seven billion, six hundred thirty-eight million, two hundred fifteen thousand, five hundred thirteen".