40001332436 has 12 divisors (see below), whose sum is σ = 75387126612. Its totient is φ = 18462153408.

The previous prime is 40001332433. The next prime is 40001332463. The reversal of 40001332436 is 63423310004.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 4193339536 + 35807992900 = 64756^2 + 189230^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40001332433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 384628145 + ... + 384628248.

It is an arithmetic number, because the mean of its divisors is an integer number (6282260551).

Almost surely, 2^40001332436 is an apocalyptic number.

It is an amenable number.

40001332436 is a deficient number, since it is larger than the sum of its proper divisors (35385794176).

40001332436 is a wasteful number, since it uses less digits than its factorization.

40001332436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 769256410 (or 769256408 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 26.

The spelling of 40001332436 in words is "forty billion, one million, three hundred thirty-two thousand, four hundred thirty-six".