11111110001010 has 64 divisors (see below), whose sum is σ = 29800896312960. Its totient is φ = 2945835702720.

The previous prime is 11111110000999. The next prime is 11111110001027. The reversal of 11111110001010 is 1010001111111.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 11111110000983 and 11111110001001.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 118890456 + ... + 118983875.

It is an arithmetic number, because the mean of its divisors is an integer number (465639004890).

Almost surely, 2^{11111110001010} is an apocalyptic number.

11111110001010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11111110001010 is an abundant number, since it is smaller than the sum of its proper divisors (18689786311950).

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

11111110001010 is a wasteful number, since it uses less digits than its factorization.

11111110001010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237874520 (or 237874514 counting only the distinct ones).

The product of its (nonzero) digits is 1, while the sum is 9.

Adding to 11111110001010 its reverse (1010001111111), we get a palindrome (12121111112121).

The spelling of 11111110001010 in words is "eleven trillion, one hundred eleven billion, one hundred ten million, one thousand, ten".