2691685152 has 144 divisors (see below), whose sum is σ = 8321564160. Its totient is φ = 820348416.

The previous prime is 2691685121. The next prime is 2691685153. The reversal of 2691685152 is 2515861962.

It is a tau number, because it is divible by the number of its divisors (144).

It is a junction number, because it is equal to n+sod(n) for n = 2691685098 and 2691685107.

It is not an unprimeable number, because it can be changed into a prime (2691685153) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 397249 + ... + 403967.

It is an arithmetic number, because the mean of its divisors is an integer number (57788640).

Almost surely, 2^2691685152 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2691685152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4160782080).

2691685152 is an abundant number, since it is smaller than the sum of its proper divisors (5629879008).

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

2691685152 is a wasteful number, since it uses less digits than its factorization.

2691685152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6855 (or 6844 counting only the distinct ones).

The product of its digits is 259200, while the sum is 45.

The square root of 2691685152 is about 51881.4528709442. The cubic root of 2691685152 is about 1391.0457689230.

The spelling of 2691685152 in words is "two billion, six hundred ninety-one million, six hundred eighty-five thousand, one hundred fifty-two".