40815072780 has 96 divisors (see below), whose sum is σ = 118718949888. Its totient is φ = 10468953600.

The previous prime is 40815072713. The next prime is 40815072799. The reversal of 40815072780 is 8727051804.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 57819 + ... + 291501.

It is an arithmetic number, because the mean of its divisors is an integer number (1236655728).

Almost surely, 2^40815072780 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 40815072780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59359474944).

40815072780 is an abundant number, since it is smaller than the sum of its proper divisors (77903877108).

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

40815072780 is a wasteful number, since it uses less digits than its factorization.

40815072780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233807 (or 233805 counting only the distinct ones).

The product of its (nonzero) digits is 125440, while the sum is 42.

The spelling of 40815072780 in words is "forty billion, eight hundred fifteen million, seventy-two thousand, seven hundred eighty".