840254472354136 has 32 divisors (see below), whose sum is σ = 1878829876074240. Its totient is φ = 344452143945888.

The previous prime is 840254472354109. The next prime is 840254472354137. The reversal of 840254472354136 is 631453274452048.

It is a super-2 number, since 2×840254472354136² (a number of 31 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (840254472354137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 326185741086 + ... + 326185743661.

It is an arithmetic number, because the mean of its divisors is an integer number (58713433627320).

Almost surely, 2^{840254472354136} is an apocalyptic number.

It is an amenable number.

840254472354136 is an abundant number, since it is smaller than the sum of its proper divisors (1038575403720104).

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

840254472354136 is a wasteful number, since it uses less digits than its factorization.

840254472354136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 652371484783 (or 652371484779 counting only the distinct ones).

The product of its (nonzero) digits is 77414400, while the sum is 58.

The spelling of 840254472354136 in words is "eight hundred forty trillion, two hundred fifty-four billion, four hundred seventy-two million, three hundred fifty-four thousand, one hundred thirty-six".