745906400985 has 32 divisors (see below), whose sum is σ = 1196847894528. Its totient is φ = 396684691200.

The previous prime is 745906400969. The next prime is 745906401011. The reversal of 745906400985 is 589004609547.

It is not a de Polignac number, because 745906400985 - 2⁴ = 745906400969 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29292519 + ... + 29317971.

It is an arithmetic number, because the mean of its divisors is an integer number (37401496704).

Almost surely, 2^745906400985 is an apocalyptic number.

It is an amenable number.

745906400985 is a deficient number, since it is larger than the sum of its proper divisors (450941493543).

745906400985 is a wasteful number, since it uses less digits than its factorization.

745906400985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30945.

The product of its (nonzero) digits is 10886400, while the sum is 57.

The spelling of 745906400985 in words is "seven hundred forty-five billion, nine hundred six million, four hundred thousand, nine hundred eighty-five".