252778338690 has 16 divisors (see below), whose sum is σ = 606668012928. Its totient is φ = 67407556976.

The previous prime is 252778338689. The next prime is 252778338721. The reversal of 252778338690 is 96833877252.

252778338690 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×252778338690² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4212972282 + ... + 4212972341.

It is an arithmetic number, because the mean of its divisors is an integer number (37916750808).

Almost surely, 2^252778338690 is an apocalyptic number.

252778338690 is an abundant number, since it is smaller than the sum of its proper divisors (353889674238).

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

252778338690 is a wasteful number, since it uses less digits than its factorization.

252778338690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8425944633.

The product of its (nonzero) digits is 30481920, while the sum is 60.

The spelling of 252778338690 in words is "two hundred fifty-two billion, seven hundred seventy-eight million, three hundred thirty-eight thousand, six hundred ninety".