2691002669556 has 48 divisors (see below), whose sum is σ = 6437554212096. Its totient is φ = 874499702784.

The previous prime is 2691002669527. The next prime is 2691002669567. The reversal of 2691002669556 is 6559662001962.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2691002669496 and 2691002669505.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9137701 + ... + 9427596.

It is an arithmetic number, because the mean of its divisors is an integer number (134115712752).

Almost surely, 2^{2691002669556} is an apocalyptic number.

It is an amenable number.

2691002669556 is an abundant number, since it is smaller than the sum of its proper divisors (3746551542540).

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

2691002669556 is a wasteful number, since it uses less digits than its factorization.

2691002669556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18565608 (or 18565606 counting only the distinct ones).

The product of its (nonzero) digits is 10497600, while the sum is 57.

The spelling of 2691002669556 in words is "two trillion, six hundred ninety-one billion, two million, six hundred sixty-nine thousand, five hundred fifty-six".