2155653702 has 128 divisors (see below), whose sum is σ = 5302886400. Its totient is φ = 646053408.

The previous prime is 2155653701. The next prime is 2155653713. The reversal of 2155653702 is 2073565512.

2155653702 is a `hidden beast` number, since 21 + 5 + 565 + 3 + 70 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2155653701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3940593 + ... + 3941139.

It is an arithmetic number, because the mean of its divisors is an integer number (41428800).

Almost surely, 2^2155653702 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2155653702, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2651443200).

2155653702 is an abundant number, since it is smaller than the sum of its proper divisors (3147232698).

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

2155653702 is a wasteful number, since it uses less digits than its factorization.

2155653702 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 767 (or 761 counting only the distinct ones).

The product of its (nonzero) digits is 63000, while the sum is 36.

The square root of 2155653702 is about 46429.0178875237. The cubic root of 2155653702 is about 1291.7932119118.

The spelling of 2155653702 in words is "two billion, one hundred fifty-five million, six hundred fifty-three thousand, seven hundred two".