812254361880 has 128 divisors (see below), whose sum is σ = 2661167416320. Its totient is φ = 197123458560.

The previous prime is 812254361861. The next prime is 812254361881. The reversal of 812254361880 is 88163452218.

812254361880 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (812254361881) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3555972 + ... + 3777491.

It is an arithmetic number, because the mean of its divisors is an integer number (20790370440).

Almost surely, 2^812254361880 is an apocalyptic number.

It is an amenable number.

812254361880 is an abundant number, since it is smaller than the sum of its proper divisors (1848913054440).

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

812254361880 is a wasteful number, since it uses less digits than its factorization.

812254361880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7333561 (or 7333557 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 48.

The spelling of 812254361880 in words is "eight hundred twelve billion, two hundred fifty-four million, three hundred sixty-one thousand, eight hundred eighty".