10891742388 has 48 divisors (see below), whose sum is σ = 25789802304. Its totient is φ = 3577236480.

The previous prime is 10891742363. The next prime is 10891742441. The reversal of 10891742388 is 88324719801.

It is a self number, because there is not a number n which added to its sum of digits gives 10891742388.

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, 243618 + ... + 284838.

It is an arithmetic number, because the mean of its divisors is an integer number (537287548).

Almost surely, 2^10891742388 is an apocalyptic number.

It is an amenable number.

10891742388 is an abundant number, since it is smaller than the sum of its proper divisors (14898059916).

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

10891742388 is a wasteful number, since it uses less digits than its factorization.

10891742388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41552 (or 41550 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 51.

The spelling of 10891742388 in words is "ten billion, eight hundred ninety-one million, seven hundred forty-two thousand, three hundred eighty-eight".