745330443621 has 16 divisors (see below), whose sum is σ = 1007430558336. Its totient is φ = 490059230976.

The previous prime is 745330443617. The next prime is 745330443659. The reversal of 745330443621 is 126344033547.

It is a happy number.

It is not a de Polignac number, because 745330443621 - 2² = 745330443617 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (745330443721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6299616 + ... + 6416838.

It is an arithmetic number, because the mean of its divisors is an integer number (62964409896).

Almost surely, 2^745330443621 is an apocalyptic number.

It is an amenable number.

745330443621 is a deficient number, since it is larger than the sum of its proper divisors (262100114715).

745330443621 is a wasteful number, since it uses less digits than its factorization.

745330443621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146332.

The product of its (nonzero) digits is 725760, while the sum is 42.

The spelling of 745330443621 in words is "seven hundred forty-five billion, three hundred thirty million, four hundred forty-three thousand, six hundred twenty-one".