40326497091 has 12 divisors (see below), whose sum is σ = 58259246968. Its totient is φ = 26879779584.

The previous prime is 40326497089. The next prime is 40326497117. The reversal of 40326497091 is 19079462304.

It is a happy number.

40326497091 is a `hidden beast` number, since 40 + 32 + 6 + 497 + 0 + 91 = 666.

It is not a de Polignac number, because 40326497091 - 2¹ = 40326497089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40326497021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 322765 + ... + 429918.

Almost surely, 2^40326497091 is an apocalyptic number.

40326497091 is a deficient number, since it is larger than the sum of its proper divisors (17932749877).

40326497091 is a wasteful number, since it uses less digits than its factorization.

40326497091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 758642 (or 758639 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 45.

The spelling of 40326497091 in words is "forty billion, three hundred twenty-six million, four hundred ninety-seven thousand, ninety-one".