745561278168 has 512 divisors, whose sum is σ = 2399265792000. Its totient is φ = 188256337920.

The previous prime is 745561278101. The next prime is 745561278169. The reversal of 745561278168 is 861872165547.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (745561278169) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 386100163 + ... + 386102093.

It is an arithmetic number, because the mean of its divisors is an integer number (4686066000).

Almost surely, 2^745561278168 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 745561278168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1199632896000).

745561278168 is an abundant number, since it is smaller than the sum of its proper divisors (1653704513832).

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

745561278168 is a wasteful number, since it uses less digits than its factorization.

745561278168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2135 (or 2131 counting only the distinct ones).

The product of its digits is 22579200, while the sum is 60.

The spelling of 745561278168 in words is "seven hundred forty-five billion, five hundred sixty-one million, two hundred seventy-eight thousand, one hundred sixty-eight".