11111390290 has 128 divisors (see below), whose sum is σ = 27195678720. Its totient is φ = 3156192000.

The previous prime is 11111390287. The next prime is 11111390293. The reversal of 11111390290 is 9209311111.

11111390290 = 11005² + 11006² + ... + 11095².

It is an interprime number because it is at equal distance from previous prime (11111390287) and next prime (11111390293).

It is not an unprimeable number, because it can be changed into a prime (11111390293) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 783765 + ... + 797815.

It is an arithmetic number, because the mean of its divisors is an integer number (212466240).

Almost surely, 2^11111390290 is an apocalyptic number.

11111390290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11111390290 is an abundant number, since it is smaller than the sum of its proper divisors (16084288430).

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

11111390290 is a wasteful number, since it uses less digits than its factorization.

11111390290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14168.

The product of its (nonzero) digits is 486, while the sum is 28.

The spelling of 11111390290 in words is "eleven billion, one hundred eleven million, three hundred ninety thousand, two hundred ninety".