745665534215 has 32 divisors (see below), whose sum is σ = 1040701824000. Its totient is φ = 502288478208.

The previous prime is 745665534197. The next prime is 745665534221. The reversal of 745665534215 is 512435566547.

It is a cyclic number.

It is not a de Polignac number, because 745665534215 - 2²⁰ = 745664485639 is a prime.

It is a super-2 number, since 2×745665534215² (a number of 25 digits) contains 22 as substring.

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, 2781446 + ... + 3037724.

It is an arithmetic number, because the mean of its divisors is an integer number (32521932000).

Almost surely, 2^745665534215 is an apocalyptic number.

745665534215 is a deficient number, since it is larger than the sum of its proper divisors (295036289785).

745665534215 is a wasteful number, since it uses less digits than its factorization.

745665534215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257759.

The product of its digits is 15120000, while the sum is 53.

The spelling of 745665534215 in words is "seven hundred forty-five billion, six hundred sixty-five million, five hundred thirty-four thousand, two hundred fifteen".