40423635730 has 16 divisors (see below), whose sum is σ = 72780712344. Its totient is φ = 16165416960.

The previous prime is 40423635683. The next prime is 40423635739. The reversal of 40423635730 is 3753632404.

It can be written as a sum of positive squares in 4 ways, for example, as 19464993289 + 20958642441 = 139517^2 + 144771^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 40423635730.

It is not an unprimeable number, because it can be changed into a prime (40423635739) 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, 462447 + ... + 542866.

Almost surely, 2^40423635730 is an apocalyptic number.

40423635730 is a deficient number, since it is larger than the sum of its proper divisors (32357076614).

40423635730 is a wasteful number, since it uses less digits than its factorization.

40423635730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1009341.

The product of its (nonzero) digits is 181440, while the sum is 37.

The spelling of 40423635730 in words is "forty billion, four hundred twenty-three million, six hundred thirty-five thousand, seven hundred thirty".