40432780746 has 64 divisors (see below), whose sum is σ = 92398440960. Its totient is φ = 13096365120.

The previous prime is 40432780741. The next prime is 40432780753. The reversal of 40432780746 is 64708723404.

It is not an unprimeable number, because it can be changed into a prime (40432780741) 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, 1579711 + ... + 1605101.

It is an arithmetic number, because the mean of its divisors is an integer number (1443725640).

Almost surely, 2^40432780746 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40432780746, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46199220480).

40432780746 is an abundant number, since it is smaller than the sum of its proper divisors (51965660214).

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

40432780746 is a wasteful number, since it uses less digits than its factorization.

40432780746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26236 (or 26230 counting only the distinct ones).

The product of its (nonzero) digits is 903168, while the sum is 45.

The spelling of 40432780746 in words is "forty billion, four hundred thirty-two million, seven hundred eighty thousand, seven hundred forty-six".