11801890115388 has 36 divisors (see below), whose sum is σ = 30050311462080. Its totient is φ = 3905248309056.

The previous prime is 11801890115371. The next prime is 11801890115419. The reversal of 11801890115388 is 88351109810811.

It is a happy number.

11801890115388 is a `hidden beast` number, since 1 + 1 + 8 + 0 + 1 + 8 + 90 + 11 + 538 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×11801890115388² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1196455948 + ... + 1196465811.

Almost surely, 2^{11801890115388} is an apocalyptic number.

11801890115388 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

11801890115388 is an abundant number, since it is smaller than the sum of its proper divisors (18248421346692).

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

11801890115388 is a wasteful number, since it uses less digits than its factorization.

11801890115388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2392921906 (or 2392921901 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 54.

The spelling of 11801890115388 in words is "eleven trillion, eight hundred one billion, eight hundred ninety million, one hundred fifteen thousand, three hundred eighty-eight".