2691045504 has 240 divisors, whose sum is σ = 9317778030. Its totient is φ = 768724992.

The previous prime is 2691045457. The next prime is 2691045523. The reversal of 2691045504 is 4055401962.

2691045504 is a `hidden beast` number, since 26 + 91 + 0 + 45 + 504 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1922647104 + 768398400 = 43848^2 + 27720^2 .

It is a super-2 number, since 2×2691045504² = 14483451809197228032, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 505384 + ... + 510680.

Almost surely, 2^2691045504 is an apocalyptic number.

2691045504 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2691045504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4658889015).

2691045504 is an abundant number, since it is smaller than the sum of its proper divisors (6626732526).

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

2691045504 is an equidigital number, since it uses as much as digits as its factorization.

2691045504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5337 (or 5309 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 2691045504 is about 51875.2879895620. The cubic root of 2691045504 is about 1390.9355715206.

The spelling of 2691045504 in words is "two billion, six hundred ninety-one million, forty-five thousand, five hundred four".