64156045343743 has 4 divisors (see below), whose sum is σ = 64478437531600. Its totient is φ = 63833653155888.

The previous prime is 64156045343681. The next prime is 64156045343777. The reversal of 64156045343743 is 34734354065146.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 64156045343743 - 2⁹ = 64156045343231 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64156045343443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 161196093630 + ... + 161196094027.

It is an arithmetic number, because the mean of its divisors is an integer number (16119609382900).

Almost surely, 2^{64156045343743} is an apocalyptic number.

64156045343743 is a deficient number, since it is larger than the sum of its proper divisors (322392187857).

64156045343743 is a wasteful number, since it uses less digits than its factorization.

64156045343743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322392187856.

The product of its (nonzero) digits is 43545600, while the sum is 55.

The spelling of 64156045343743 in words is "sixty-four trillion, one hundred fifty-six billion, forty-five million, three hundred forty-three thousand, seven hundred forty-three".