2501216340 has 96 divisors (see below), whose sum is σ = 8017895424. Its totient is φ = 570706560.

The previous prime is 2501216309. The next prime is 2501216387. The reversal of 2501216340 is 436121052.

It is a self number, because there is not a number n which added to its sum of digits gives 2501216340.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 250035 + ... + 259845.

It is an arithmetic number, because the mean of its divisors is an integer number (83519744).

Almost surely, 2^2501216340 is an apocalyptic number.

2501216340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2501216340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4008947712).

2501216340 is an abundant number, since it is smaller than the sum of its proper divisors (5516679084).

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

2501216340 is a wasteful number, since it uses less digits than its factorization.

2501216340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10437 (or 10435 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 2501216340 is about 50012.1619208768. The cubic root of 2501216340 is about 1357.4288829248.

Adding to 2501216340 its reverse (436121052), we get a palindrome (2937337392).

The spelling of 2501216340 in words is "two billion, five hundred one million, two hundred sixteen thousand, three hundred forty".