11515355213415 has 16 divisors (see below), whose sum is σ = 18428910787968. Its totient is φ = 6140075298336.

The previous prime is 11515355213389. The next prime is 11515355213419. The reversal of 11515355213415 is 51431255351511.

It is not a de Polignac number, because 11515355213415 - 2⁹ = 11515355212903 is a prime.

It is a super-2 number, since 2×11515355213415² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11515355213419) 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, 90401869 + ... + 90529158.

It is an arithmetic number, because the mean of its divisors is an integer number (1151806924248).

Almost surely, 2^{11515355213415} is an apocalyptic number.

11515355213415 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11515355213415 is a deficient number, since it is larger than the sum of its proper divisors (6913555574553).

11515355213415 is a wasteful number, since it uses less digits than its factorization.

11515355213415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180935278.

The product of its digits is 225000, while the sum is 42.

The spelling of 11515355213415 in words is "eleven trillion, five hundred fifteen billion, three hundred fifty-five million, two hundred thirteen thousand, four hundred fifteen".