40420782403728 has 40 divisors (see below), whose sum is σ = 104567632987200. Its totient is φ = 13454590464384.

The previous prime is 40420782403721. The next prime is 40420782403739. The reversal of 40420782403728 is 82730428702404.

It is a super-2 number, since 2×40420782403728² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40420782403721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 593830308 + ... + 593898371.

It is an arithmetic number, because the mean of its divisors is an integer number (2614190824680).

Almost surely, 2^{40420782403728} is an apocalyptic number.

40420782403728 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

40420782403728 is an abundant number, since it is smaller than the sum of its proper divisors (64146850583472).

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

40420782403728 is a wasteful number, since it uses less digits than its factorization.

40420782403728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1187729399 (or 1187729393 counting only the distinct ones).

The product of its (nonzero) digits is 4816896, while the sum is 51.

The spelling of 40420782403728 in words is "forty trillion, four hundred twenty billion, seven hundred eighty-two million, four hundred three thousand, seven hundred twenty-eight".