745340821278 has 8 divisors (see below), whose sum is σ = 1490681642568. Its totient is φ = 248446940424.

The previous prime is 745340821237. The next prime is 745340821283. The reversal of 745340821278 is 872128043547.

It is a happy number.

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

745340821278 is an admirable number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 745340821278.

It is a congruent number.

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, 62111735101 + ... + 62111735112.

It is an arithmetic number, because the mean of its divisors is an integer number (186335205321).

Almost surely, 2^745340821278 is an apocalyptic number.

745340821278 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

745340821278 is a wasteful number, since it uses less digits than its factorization.

745340821278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124223470218.

The product of its (nonzero) digits is 3010560, while the sum is 51.

The spelling of 745340821278 in words is "seven hundred forty-five billion, three hundred forty million, eight hundred twenty-one thousand, two hundred seventy-eight".