11551990177792 has 56 divisors (see below), whose sum is σ = 23112452114856. Its totient is φ = 5773524467712.

The previous prime is 11551990177771. The next prime is 11551990177801. The reversal of 11551990177792 is 29777109915511.

It is a Harshad number since it is a multiple of its sum of digits (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18926208 + ... + 19527040.

Almost surely, 2^{11551990177792} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11551990177792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11556226057428).

11551990177792 is an abundant number, since it is smaller than the sum of its proper divisors (11560461937064).

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

11551990177792 is an frugal number, since it uses more digits than its factorization.

11551990177792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 603206 (or 603182 counting only the distinct ones).

The product of its (nonzero) digits is 12502350, while the sum is 64.

The spelling of 11551990177792 in words is "eleven trillion, five hundred fifty-one billion, nine hundred ninety million, one hundred seventy-seven thousand, seven hundred ninety-two".