2459997540 has 960 divisors, whose sum is σ = 10901011968. Its totient is φ = 447897600.

The previous prime is 2459997539. The next prime is 2459997611. The reversal of 2459997540 is 457999542.

2459997540 is a `hidden beast` number, since 2 + 4 + 5 + 9 + 9 + 97 + 540 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 319 ways as a sum of consecutive naturals, for example, 59999920 + ... + 59999960.

Almost surely, 2^2459997540 is an apocalyptic number.

2459997540 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 2459997540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5450505984).

2459997540 is an abundant number, since it is smaller than the sum of its proper divisors (8441014428).

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

2459997540 is a wasteful number, since it uses less digits than its factorization.

2459997540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130 (or 119 counting only the distinct ones).

The product of its (nonzero) digits is 4082400, while the sum is 54.

The square root of 2459997540 is about 49598.3622713492. The cubic root of 2459997540 is about 1349.9309594322.

It can be divided in two parts, 2459 and 997540, that added together give a palindrome (999999).

The spelling of 2459997540 in words is "two billion, four hundred fifty-nine million, nine hundred ninety-seven thousand, five hundred forty".