40678868992 has 48 divisors (see below), whose sum is σ = 81548567100. Its totient is φ = 20286750720.

The previous prime is 40678868981. The next prime is 40678869029. The reversal of 40678868992 is 29986887604.

It can be written as a sum of positive squares in 2 ways, for example, as 32261907456 + 8416961536 = 179616^2 + 91744^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 771142 + ... + 822202.

Almost surely, 2^40678868992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40678868992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40774283550).

40678868992 is an abundant number, since it is smaller than the sum of its proper divisors (40869698108).

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

40678868992 is an equidigital number, since it uses as much as digits as its factorization.

40678868992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51472 (or 51452 counting only the distinct ones).

The product of its (nonzero) digits is 83607552, while the sum is 67.

The spelling of 40678868992 in words is "forty billion, six hundred seventy-eight million, eight hundred sixty-eight thousand, nine hundred ninety-two".