740042635646 has 32 divisors (see below), whose sum is σ = 1169669198880. Its totient is φ = 350651952000.

The previous prime is 740042635637. The next prime is 740042635663. The reversal of 740042635646 is 646536240047.

It is a self number, because there is not a number n which added to its sum of digits gives 740042635646.

It is a congruent number.

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, 1428296 + ... + 1876196.

It is an arithmetic number, because the mean of its divisors is an integer number (36552162465).

Almost surely, 2^740042635646 is an apocalyptic number.

740042635646 is a deficient number, since it is larger than the sum of its proper divisors (429626563234).

740042635646 is a wasteful number, since it uses less digits than its factorization.

740042635646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448460.

The product of its (nonzero) digits is 2903040, while the sum is 47.

The spelling of 740042635646 in words is "seven hundred forty billion, forty-two million, six hundred thirty-five thousand, six hundred forty-six".