40424628381 has 16 divisors (see below), whose sum is σ = 54280754304. Its totient is φ = 26759476224.

The previous prime is 40424628371. The next prime is 40424628383. The reversal of 40424628381 is 18382642404.

It is a happy number.

It is not a de Polignac number, because 40424628381 - 2¹⁰ = 40424627357 is a prime.

It is a super-2 number, since 2×40424628381² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40424628383) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 426381 + ... + 512493.

It is an arithmetic number, because the mean of its divisors is an integer number (3392547144).

Almost surely, 2^40424628381 is an apocalyptic number.

It is an amenable number.

40424628381 is a deficient number, since it is larger than the sum of its proper divisors (13856125923).

40424628381 is a wasteful number, since it uses less digits than its factorization.

40424628381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87220.

The product of its (nonzero) digits is 294912, while the sum is 42.

The spelling of 40424628381 in words is "forty billion, four hundred twenty-four million, six hundred twenty-eight thousand, three hundred eighty-one".