40788465385 has 8 divisors (see below), whose sum is σ = 48950187336. Its totient is φ = 32628086400.

The previous prime is 40788465359. The next prime is 40788465391. The reversal of 40788465385 is 58356488704.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1419556329 + 39368909056 = 37677^2 + 198416^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40788465385 - 2⁷ = 40788465257 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 267666 + ... + 391435.

It is an arithmetic number, because the mean of its divisors is an integer number (6118773417).

Almost surely, 2^40788465385 is an apocalyptic number.

It is an amenable number.

40788465385 is a deficient number, since it is larger than the sum of its proper divisors (8161721951).

40788465385 is a wasteful number, since it uses less digits than its factorization.

40788465385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 671483.

The product of its (nonzero) digits is 25804800, while the sum is 58.

The spelling of 40788465385 in words is "forty billion, seven hundred eighty-eight million, four hundred sixty-five thousand, three hundred eighty-five".