40022012032 has 16 divisors (see below), whose sum is σ = 79731352350. Its totient is φ = 20011005952.

The previous prime is 40022012029. The next prime is 40022012039. The reversal of 40022012032 is 23021022004.

It can be written as a sum of positive squares in only one way, i.e., 39977603136 + 44408896 = 199944^2 + 6664^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a super-2 number, since 2×40022012032² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 40022011997 and 40022012015.

It is not an unprimeable number, because it can be changed into a prime (40022012039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156335857 + ... + 156336112.

Almost surely, 2^40022012032 is an apocalyptic number.

It is an amenable number.

40022012032 is a deficient number, since it is larger than the sum of its proper divisors (39709340318).

40022012032 is an equidigital number, since it uses as much as digits as its factorization.

40022012032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312671983 (or 312671971 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

Adding to 40022012032 its reverse (23021022004), we get a palindrome (63043034036).

The spelling of 40022012032 in words is "forty billion, twenty-two million, twelve thousand, thirty-two".