645740014534 has 8 divisors (see below), whose sum is σ = 970079841720. Its totient is φ = 322380067296.

The previous prime is 645740014523. The next prime is 645740014547. The reversal of 645740014534 is 435410047546.

645740014534 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 244968339 + ... + 244970974.

It is an arithmetic number, because the mean of its divisors is an integer number (121259980215).

Almost surely, 2^645740014534 is an apocalyptic number.

645740014534 is a deficient number, since it is larger than the sum of its proper divisors (324339827186).

645740014534 is a wasteful number, since it uses less digits than its factorization.

645740014534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489939974.

The product of its (nonzero) digits is 806400, while the sum is 43.

The spelling of 645740014534 in words is "six hundred forty-five billion, seven hundred forty million, fourteen thousand, five hundred thirty-four".