40345969385 has 16 divisors (see below), whose sum is σ = 49733560656. Its totient is φ = 31398190848.

The previous prime is 40345969379. The next prime is 40345969393. The reversal of 40345969385 is 58396954304.

It is a happy number.

40345969385 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 2612129881 + 37733839504 = 51109^2 + 194252^2 .

It is a cyclic number.

It is not a de Polignac number, because 40345969385 - 2³⁴ = 23166100201 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40345969385.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1056647 + ... + 1094163.

It is an arithmetic number, because the mean of its divisors is an integer number (3108347541).

Almost surely, 2^40345969385 is an apocalyptic number.

It is an amenable number.

40345969385 is a deficient number, since it is larger than the sum of its proper divisors (9387591271).

40345969385 is a wasteful number, since it uses less digits than its factorization.

40345969385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43372.

The product of its (nonzero) digits is 13996800, while the sum is 56.

The spelling of 40345969385 in words is "forty billion, three hundred forty-five million, nine hundred sixty-nine thousand, three hundred eighty-five".