64503341623 has 12 divisors (see below), whose sum is σ = 78983684760. Its totient is φ = 52378652592.

The previous prime is 64503341603. The next prime is 64503341629. The reversal of 64503341623 is 32614330546.

64503341623 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-64503341623 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64503341629) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34641036 + ... + 34642897.

It is an arithmetic number, because the mean of its divisors is an integer number (6581973730).

Almost surely, 2^64503341623 is an apocalyptic number.

64503341623 is a deficient number, since it is larger than the sum of its proper divisors (14480343137).

64503341623 is a wasteful number, since it uses less digits than its factorization.

64503341623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69283966 (or 69283959 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 37.

The spelling of 64503341623 in words is "sixty-four billion, five hundred three million, three hundred forty-one thousand, six hundred twenty-three".