1256116662 has 12 divisors (see below), whose sum is σ = 2721586140. Its totient is φ = 418705548.

The previous prime is 1256116661. The next prime is 1256116681. The reversal of 1256116662 is 2666116521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1256116661) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 34892112 + ... + 34892147.

It is an arithmetic number, because the mean of its divisors is an integer number (226798845).

Almost surely, 2^1256116662 is an apocalyptic number.

1256116662 is an abundant number, since it is smaller than the sum of its proper divisors (1465469478).

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

1256116662 is a wasteful number, since it uses less digits than its factorization.

1256116662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69784267 (or 69784264 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 1256116662 is about 35441.7361595055. The cubic root of 1256116662 is about 1078.9715466641.

The spelling of 1256116662 in words is "one billion, two hundred fifty-six million, one hundred sixteen thousand, six hundred sixty-two".