745431224423032 has 128 divisors (see below), whose sum is σ = 1765627884979200. Its totient is φ = 287478404978688.

The previous prime is 745431224423003. The next prime is 745431224423077. The reversal of 745431224423032 is 230324422134547.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a congruent 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, 42180003 + ... + 57184045.

It is an arithmetic number, because the mean of its divisors is an integer number (13793967851400).

Almost surely, 2^{745431224423032} 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 745431224423032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (882813942489600).

745431224423032 is an abundant number, since it is smaller than the sum of its proper divisors (1020196660556168).

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

745431224423032 is a wasteful number, since it uses less digits than its factorization.

745431224423032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15006365 (or 15006361 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 46.

Adding to 745431224423032 its reverse (230324422134547), we get a palindrome (975755646557579).

The spelling of 745431224423032 in words is "seven hundred forty-five trillion, four hundred thirty-one billion, two hundred twenty-four million, four hundred twenty-three thousand, thirty-two".