40372375649 has 8 divisors (see below), whose sum is σ = 41567010408. Its totient is φ = 39187738240.

The previous prime is 40372375613. The next prime is 40372375679. The reversal of 40372375649 is 94657327304.

It can be written as a sum of positive squares in 4 ways, for example, as 442345024 + 39930030625 = 21032^2 + 199825^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40372375649 - 2¹² = 40372371553 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40372375597 and 40372375606.

It is not an unprimeable number, because it can be changed into a prime (40372375679) 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, 2491142 + ... + 2507295.

It is an arithmetic number, because the mean of its divisors is an integer number (5195876301).

Almost surely, 2^40372375649 is an apocalyptic number.

It is an amenable number.

40372375649 is a deficient number, since it is larger than the sum of its proper divisors (1194634759).

40372375649 is a wasteful number, since it uses less digits than its factorization.

40372375649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4998675.

The product of its (nonzero) digits is 3810240, while the sum is 50.

The spelling of 40372375649 in words is "forty billion, three hundred seventy-two million, three hundred seventy-five thousand, six hundred forty-nine".