2127778732926 has 504 divisors, whose sum is σ = 6479014923360. Its totient is φ = 520123887360.

The previous prime is 2127778732913. The next prime is 2127778732927. The reversal of 2127778732926 is 6292378777212.

2127778732926 is a `hidden beast` number, since 2 + 1 + 277 + 7 + 8 + 73 + 292 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2127778732927) by changing a digit.

It is a polite number, since it can be written in 251 ways as a sum of consecutive naturals, for example, 146948955 + ... + 146963433.

It is an arithmetic number, because the mean of its divisors is an integer number (12855188340).

Almost surely, 2^{2127778732926} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2127778732926, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3239507461680).

2127778732926 is an abundant number, since it is smaller than the sum of its proper divisors (4351236190434).

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

2127778732926 is a wasteful number, since it uses less digits than its factorization.

2127778732926 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14552 (or 14519 counting only the distinct ones).

The product of its digits is 49787136, while the sum is 63.

The spelling of 2127778732926 in words is "two trillion, one hundred twenty-seven billion, seven hundred seventy-eight million, seven hundred thirty-two thousand, nine hundred twenty-six".