40027738891 has 8 divisors (see below), whose sum is σ = 45747228384. Its totient is φ = 34308559680.

The previous prime is 40027738889. The next prime is 40027738903. The reversal of 40027738891 is 19883772004.

40027738891 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 40027738891 - 2¹ = 40027738889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40027736891) 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, 374631 + ... + 469471.

It is an arithmetic number, because the mean of its divisors is an integer number (5718403548).

Almost surely, 2^40027738891 is an apocalyptic number.

40027738891 is a deficient number, since it is larger than the sum of its proper divisors (5719489493).

40027738891 is an equidigital number, since it uses as much as digits as its factorization.

40027738891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155141.

The product of its (nonzero) digits is 677376, while the sum is 49.

The spelling of 40027738891 in words is "forty billion, twenty-seven million, seven hundred thirty-eight thousand, eight hundred ninety-one".