11515136621352 has 64 divisors (see below), whose sum is σ = 35431189610880. Its totient is φ = 3036959108352.

The previous prime is 11515136621347. The next prime is 11515136621357. The reversal of 11515136621352 is 25312663151511.

It is an interprime number because it is at equal distance from previous prime (11515136621347) and next prime (11515136621357).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (11515136621357) 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, 2636247043 + ... + 2636251410.

It is an arithmetic number, because the mean of its divisors is an integer number (553612337670).

Almost surely, 2^{11515136621352} is an apocalyptic number.

11515136621352 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11515136621352 is an abundant number, since it is smaller than the sum of its proper divisors (23916052989528).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11515136621352 is a wasteful number, since it uses less digits than its factorization.

11515136621352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5272498482 (or 5272498478 counting only the distinct ones).

The product of its digits is 162000, while the sum is 42.

Adding to 11515136621352 its reverse (25312663151511), we get a palindrome (36827799772863).

The spelling of 11515136621352 in words is "eleven trillion, five hundred fifteen billion, one hundred thirty-six million, six hundred twenty-one thousand, three hundred fifty-two".