40693011491 has 4 divisors (see below), whose sum is σ = 44392376184. Its totient is φ = 36993646800.

The previous prime is 40693011473. The next prime is 40693011523. The reversal of 40693011491 is 19411039604.

40693011491 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 40693011491 - 2²² = 40688817187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40693011691) 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, 1849682330 + ... + 1849682351.

It is an arithmetic number, because the mean of its divisors is an integer number (11098094046).

Almost surely, 2^40693011491 is an apocalyptic number.

40693011491 is a deficient number, since it is larger than the sum of its proper divisors (3699364693).

40693011491 is a wasteful number, since it uses less digits than its factorization.

40693011491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3699364692.

The product of its (nonzero) digits is 23328, while the sum is 38.

The spelling of 40693011491 in words is "forty billion, six hundred ninety-three million, eleven thousand, four hundred ninety-one".