40280322672 has 120 divisors (see below), whose sum is σ = 113827079184. Its totient is φ = 13296586752.

The previous prime is 40280322659. The next prime is 40280322673. The reversal of 40280322672 is 27622308204.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40280322673) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6874368 + ... + 6880224.

Almost surely, 2^40280322672 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 40280322672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56913539592).

40280322672 is an abundant number, since it is smaller than the sum of its proper divisors (73546756512).

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

40280322672 is a wasteful number, since it uses less digits than its factorization.

40280322672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6327 (or 6318 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 36.

The spelling of 40280322672 in words is "forty billion, two hundred eighty million, three hundred twenty-two thousand, six hundred seventy-two".