2151701072 has 40 divisors (see below), whose sum is σ = 4318890240. Its totient is φ = 1037399040.

The previous prime is 2151701063. The next prime is 2151701077. The reversal of 2151701072 is 2701071512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2151701077) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132704 + ... + 148032.

It is an arithmetic number, because the mean of its divisors is an integer number (107972256).

Almost surely, 2^2151701072 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 2151701072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2159445120).

2151701072 is an abundant number, since it is smaller than the sum of its proper divisors (2167189168).

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

2151701072 is a wasteful number, since it uses less digits than its factorization.

2151701072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15651 (or 15645 counting only the distinct ones).

The product of its (nonzero) digits is 980, while the sum is 26.

The square root of 2151701072 is about 46386.4319817767. The cubic root of 2151701072 is about 1291.0031801648.

Adding to 2151701072 its reverse (2701071512), we get a palindrome (4852772584).

The spelling of 2151701072 in words is "two billion, one hundred fifty-one million, seven hundred one thousand, seventy-two".