2495979720 has 384 divisors, whose sum is σ = 9109900800. Its totient is φ = 588736512.

The previous prime is 2495979713. The next prime is 2495979749. The reversal of 2495979720 is 279795942.

2495979720 is a `hidden beast` number, since 2 + 49 + 597 + 9 + 7 + 2 + 0 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 15897882 + ... + 15898038.

It is an arithmetic number, because the mean of its divisors is an integer number (23723700).

Almost surely, 2^2495979720 is an apocalyptic number.

2495979720 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 2495979720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4554950400).

2495979720 is an abundant number, since it is smaller than the sum of its proper divisors (6613921080).

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

2495979720 is a wasteful number, since it uses less digits than its factorization.

2495979720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309 (or 302 counting only the distinct ones).

The product of its (nonzero) digits is 2857680, while the sum is 54.

The square root of 2495979720 is about 49959.7810243400. The cubic root of 2495979720 is about 1356.4809033833.

The spelling of 2495979720 in words is "two billion, four hundred ninety-five million, nine hundred seventy-nine thousand, seven hundred twenty".