40545694394 has 8 divisors (see below), whose sum is σ = 63462826080. Its totient is φ = 19391419036.

The previous prime is 40545694369. The next prime is 40545694439. The reversal of 40545694394 is 49349654504.

40545694394 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 an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 440714024 + ... + 440714115.

It is an arithmetic number, because the mean of its divisors is an integer number (7932853260).

Almost surely, 2^40545694394 is an apocalyptic number.

40545694394 is a deficient number, since it is larger than the sum of its proper divisors (22917131686).

40545694394 is a wasteful number, since it uses less digits than its factorization.

40545694394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 881428164.

The product of its (nonzero) digits is 9331200, while the sum is 53.

The spelling of 40545694394 in words is "forty billion, five hundred forty-five million, six hundred ninety-four thousand, three hundred ninety-four".