2102155264 has 144 divisors (see below), whose sum is σ = 4901715000. Its totient is φ = 897515520.

The previous prime is 2102155261. The next prime is 2102155267. The reversal of 2102155264 is 4625512012.

2102155264 = T₂₇₂ + T₂₇₃ + ... + T₂₃₂₈.

It is an interprime number because it is at equal distance from previous prime (2102155261) and next prime (2102155267).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102155261) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4212487 + ... + 4212985.

Almost surely, 2^2102155264 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 2102155264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2450857500).

2102155264 is an abundant number, since it is smaller than the sum of its proper divisors (2799559736).

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

2102155264 is a wasteful number, since it uses less digits than its factorization.

2102155264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560 (or 529 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 2102155264 is about 45849.2667771252. The cubic root of 2102155264 is about 1281.0171082423.

Adding to 2102155264 its reverse (4625512012), we get a palindrome (6727667276).

The spelling of 2102155264 in words is "two billion, one hundred two million, one hundred fifty-five thousand, two hundred sixty-four".