11157857690 has 64 divisors (see below), whose sum is σ = 24376495104. Its totient is φ = 3589705728.

The previous prime is 11157857657. The next prime is 11157857713. The reversal of 11157857690 is 9675875111.

11157857690 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×11157857690² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 387119 + ... + 414941.

It is an arithmetic number, because the mean of its divisors is an integer number (380882736).

Almost surely, 2^11157857690 is an apocalyptic number.

11157857690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11157857690 is an abundant number, since it is smaller than the sum of its proper divisors (13218637414).

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

11157857690 is a wasteful number, since it uses less digits than its factorization.

11157857690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28191.

The product of its (nonzero) digits is 529200, while the sum is 50.

The spelling of 11157857690 in words is "eleven billion, one hundred fifty-seven million, eight hundred fifty-seven thousand, six hundred ninety".