812952369040 has 160 divisors (see below), whose sum is σ = 2170795060224. Its totient is φ = 277353123840.

The previous prime is 812952369023. The next prime is 812952369091. The reversal of 812952369040 is 40963259218.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 142196262 + ... + 142201978.

Almost surely, 2^812952369040 is an apocalyptic number.

812952369040 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 812952369040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1085397530112).

812952369040 is an abundant number, since it is smaller than the sum of its proper divisors (1357842691184).

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

812952369040 is a wasteful number, since it uses less digits than its factorization.

812952369040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6945 (or 6939 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 49.

The spelling of 812952369040 in words is "eight hundred twelve billion, nine hundred fifty-two million, three hundred sixty-nine thousand, forty".