40426223652 has 72 divisors (see below), whose sum is σ = 108631085472. Its totient is φ = 12632160000.

The previous prime is 40426223641. The next prime is 40426223653. The reversal of 40426223652 is 25632262404.

40426223652 is a `hidden beast` number, since 4 + 0 + 426 + 223 + 6 + 5 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (40426223653) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22027 + ... + 285197.

It is an arithmetic number, because the mean of its divisors is an integer number (1508765076).

Almost surely, 2^40426223652 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 40426223652, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54315542736).

40426223652 is an abundant number, since it is smaller than the sum of its proper divisors (68204861820).

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

40426223652 is a wasteful number, since it uses less digits than its factorization.

40426223652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263449 (or 263444 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 36.

The spelling of 40426223652 in words is "forty billion, four hundred twenty-six million, two hundred twenty-three thousand, six hundred fifty-two".