2539421391060 has 144 divisors (see below), whose sum is σ = 7898113903680. Its totient is φ = 660082590720.

The previous prime is 2539421391043. The next prime is 2539421391149. The reversal of 2539421391060 is 601931249352.

2539421391060 is a `hidden beast` number, since 2 + 539 + 4 + 2 + 1 + 3 + 9 + 106 + 0 = 666.

It is a super-2 number, since 2×2539421391060² (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 2539421390997 and 2539421391015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3466236 + ... + 4134444.

It is an arithmetic number, because the mean of its divisors is an integer number (54848013220).

Almost surely, 2^{2539421391060} is an apocalyptic number.

2539421391060 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 2539421391060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3949056951840).

2539421391060 is an abundant number, since it is smaller than the sum of its proper divisors (5358692512620).

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

2539421391060 is a wasteful number, since it uses less digits than its factorization.

2539421391060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 668758 (or 668753 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 45.

The spelling of 2539421391060 in words is "two trillion, five hundred thirty-nine billion, four hundred twenty-one million, three hundred ninety-one thousand, sixty".