2513907126666 has 128 divisors (see below), whose sum is σ = 6028424559360. Its totient is φ = 771938678016.

The previous prime is 2513907126641. The next prime is 2513907126683. The reversal of 2513907126666 is 6666217093152.

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 63 ways as a sum of consecutive naturals, for example, 1108912465 + ... + 1108914731.

It is an arithmetic number, because the mean of its divisors is an integer number (47097066870).

Almost surely, 2^{2513907126666} is an apocalyptic number.

2513907126666 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 2513907126666, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3014212279680).

2513907126666 is an abundant number, since it is smaller than the sum of its proper divisors (3514517432694).

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

2513907126666 is a wasteful number, since it uses less digits than its factorization.

2513907126666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4805 (or 4799 counting only the distinct ones).

The product of its (nonzero) digits is 4898880, while the sum is 54.

The spelling of 2513907126666 in words is "two trillion, five hundred thirteen billion, nine hundred seven million, one hundred twenty-six thousand, six hundred sixty-six".