1011265668 has 96 divisors (see below), whose sum is σ = 3009726720. Its totient is φ = 287642880.

The previous prime is 1011265657. The next prime is 1011265681. The reversal of 1011265668 is 8665621101.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 173278 + ... + 179018.

It is an arithmetic number, because the mean of its divisors is an integer number (31351320).

Almost surely, 2^1011265668 is an apocalyptic number.

1011265668 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1011265668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1504863360).

1011265668 is an abundant number, since it is smaller than the sum of its proper divisors (1998461052).

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

1011265668 is a wasteful number, since it uses less digits than its factorization.

1011265668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5994 (or 5986 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 1011265668 is about 31800.4035823447. The cubic root of 1011265668 is about 1003.7412085703.

Adding to 1011265668 its reverse (8665621101), we get a palindrome (9676886769).

The spelling of 1011265668 in words is "one billion, eleven million, two hundred sixty-five thousand, six hundred sixty-eight".