2115172710 has 384 divisors, whose sum is σ = 7017840000. Its totient is φ = 451132416.

The previous prime is 2115172699. The next prime is 2115172721. The reversal of 2115172710 is 172715112.

It is an interprime number because it is at equal distance from previous prime (2115172699) and next prime (2115172721).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 14195716 + ... + 14195864.

It is an arithmetic number, because the mean of its divisors is an integer number (18275625).

Almost surely, 2^2115172710 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2115172710, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3508920000).

2115172710 is an abundant number, since it is smaller than the sum of its proper divisors (4902667290).

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

2115172710 is a wasteful number, since it uses less digits than its factorization.

2115172710 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245 (or 232 counting only the distinct ones).

The product of its (nonzero) digits is 980, while the sum is 27.

The square root of 2115172710 is about 45991.0068382939. The cubic root of 2115172710 is about 1283.6558711801.

Adding to 2115172710 its reverse (172715112), we get a palindrome (2287887822).

The spelling of 2115172710 in words is "two billion, one hundred fifteen million, one hundred seventy-two thousand, seven hundred ten".