11381497758 has 40 divisors (see below), whose sum is σ = 25551938808. Its totient is φ = 3786550416.

The previous prime is 11381497753. The next prime is 11381497783. The reversal of 11381497758 is 85779418311.

11381497758 is a `hidden beast` number, since 1 + 1 + 3 + 81 + 497 + 75 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11381497753) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 17560 + ... + 151892.

Almost surely, 2^11381497758 is an apocalyptic number.

11381497758 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

11381497758 is an abundant number, since it is smaller than the sum of its proper divisors (14170441050).

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

11381497758 is a wasteful number, since it uses less digits than its factorization.

11381497758 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134870 (or 134861 counting only the distinct ones).

The product of its digits is 1693440, while the sum is 54.

The spelling of 11381497758 in words is "eleven billion, three hundred eighty-one million, four hundred ninety-seven thousand, seven hundred fifty-eight".