1011640231266 has 64 divisors (see below), whose sum is σ = 2449117451520. Its totient is φ = 271951257600.

The previous prime is 1011640231169. The next prime is 1011640231291. The reversal of 1011640231266 is 6621320461101.

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, 2039116 + ... + 2486216.

It is an arithmetic number, because the mean of its divisors is an integer number (38267460180).

Almost surely, 2^{1011640231266} is an apocalyptic number.

1011640231266 is an abundant number, since it is smaller than the sum of its proper divisors (1437477220254).

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

1011640231266 is a wasteful number, since it uses less digits than its factorization.

1011640231266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450299.

The product of its (nonzero) digits is 10368, while the sum is 33.

Adding to 1011640231266 its reverse (6621320461101), we get a palindrome (7632960692367).

The spelling of 1011640231266 in words is "one trillion, eleven billion, six hundred forty million, two hundred thirty-one thousand, two hundred sixty-six".