10891749895544 has 64 divisors (see below), whose sum is σ = 24094167552000. Its totient is φ = 4516974835200.

The previous prime is 10891749895517. The next prime is 10891749895561. The reversal of 10891749895544 is 44559894719801.

It is a super-2 number, since 2×10891749895544² (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 15 ways as a sum of consecutive naturals, for example, 23464829 + ... + 23924499.

It is an arithmetic number, because the mean of its divisors is an integer number (376471368000).

Almost surely, 2^{10891749895544} is an apocalyptic number.

10891749895544 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

10891749895544 is an abundant number, since it is smaller than the sum of its proper divisors (13202417656456).

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

10891749895544 is a wasteful number, since it uses less digits than its factorization.

10891749895544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473364 (or 473360 counting only the distinct ones).

The product of its (nonzero) digits is 522547200, while the sum is 74.

The spelling of 10891749895544 in words is "ten trillion, eight hundred ninety-one billion, seven hundred forty-nine million, eight hundred ninety-five thousand, five hundred forty-four".