10891742442 has 24 divisors (see below), whose sum is σ = 25339972896. Its totient is φ = 3111926328.

The previous prime is 10891742441. The next prime is 10891742443. The reversal of 10891742442 is 24424719801.

It is an interprime number because it is at equal distance from previous prime (10891742441) and next prime (10891742443).

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

It is a junction number, because it is equal to n+sod(n) for n = 10891742394 and 10891742403.

It is not an unprimeable number, because it can be changed into a prime (10891742441) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18523078 + ... + 18523665.

It is an arithmetic number, because the mean of its divisors is an integer number (1055832204).

Almost surely, 2^10891742442 is an apocalyptic number.

10891742442 is an abundant number, since it is smaller than the sum of its proper divisors (14448230454).

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

10891742442 is a wasteful number, since it uses less digits than its factorization.

10891742442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37046762 (or 37046755 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 42.

The spelling of 10891742442 in words is "ten billion, eight hundred ninety-one million, seven hundred forty-two thousand, four hundred forty-two".