2691966540 has 24 divisors (see below), whose sum is σ = 7537506480. Its totient is φ = 717857728.

The previous prime is 2691966527. The next prime is 2691966547. The reversal of 2691966540 is 456691962.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 2691966540.

It is not an unprimeable number, because it can be changed into a prime (2691966547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22432995 + ... + 22433114.

It is an arithmetic number, because the mean of its divisors is an integer number (314062770).

Almost surely, 2^2691966540 is an apocalyptic number.

2691966540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2691966540 is an abundant number, since it is smaller than the sum of its proper divisors (4845539940).

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

2691966540 is a wasteful number, since it uses less digits than its factorization.

2691966540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44866121 (or 44866119 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 48.

The square root of 2691966540 is about 51884.1646362356. The cubic root of 2691966540 is about 1391.0942404103.

The spelling of 2691966540 in words is "two billion, six hundred ninety-one million, nine hundred sixty-six thousand, five hundred forty".