2691465899628 has 24 divisors (see below), whose sum is σ = 6851004108480. Its totient is φ = 815595727120.

The previous prime is 2691465899609. The next prime is 2691465899669. The reversal of 2691465899628 is 8269985641962.

It is a self number, because there is not a number n which added to its sum of digits gives 2691465899628.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10194946458 + ... + 10194946721.

It is an arithmetic number, because the mean of its divisors is an integer number (285458504520).

Almost surely, 2^{2691465899628} is an apocalyptic number.

It is an amenable number.

2691465899628 is an abundant number, since it is smaller than the sum of its proper divisors (4159538208852).

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

2691465899628 is a wasteful number, since it uses less digits than its factorization.

2691465899628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20389893197 (or 20389893195 counting only the distinct ones).

The product of its digits is 806215680, while the sum is 75.

The spelling of 2691465899628 in words is "two trillion, six hundred ninety-one billion, four hundred sixty-five million, eight hundred ninety-nine thousand, six hundred twenty-eight".