2638776250140 has 48 divisors (see below), whose sum is σ = 7709815830528. Its totient is φ = 673079159104.

The previous prime is 2638776250109. The next prime is 2638776250189. The reversal of 2638776250140 is 410526778362.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 956076972 + ... + 956079731.

It is an arithmetic number, because the mean of its divisors is an integer number (160621163136).

Almost surely, 2^{2638776250140} is an apocalyptic number.

2638776250140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2638776250140 is an abundant number, since it is smaller than the sum of its proper divisors (5071039580388).

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

2638776250140 is a wasteful number, since it uses less digits than its factorization.

2638776250140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1912156738 (or 1912156736 counting only the distinct ones).

The product of its (nonzero) digits is 3386880, while the sum is 51.

The spelling of 2638776250140 in words is "two trillion, six hundred thirty-eight billion, seven hundred seventy-six million, two hundred fifty thousand, one hundred forty".