64354646646542 has 16 divisors (see below), whose sum is σ = 110331389615712. Its totient is φ = 27578278293120.

The previous prime is 64354646646491. The next prime is 64354646646629. The reversal of 64354646646542 is 24564664645346.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 190204559 + ... + 190542602.

It is an arithmetic number, because the mean of its divisors is an integer number (6895711850982).

Almost surely, 2^{64354646646542} is an apocalyptic number.

64354646646542 is a deficient number, since it is larger than the sum of its proper divisors (45976742969170).

64354646646542 is a wasteful number, since it uses less digits than its factorization.

64354646646542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380759243.

The product of its digits is 1194393600, while the sum is 65.

The spelling of 64354646646542 in words is "sixty-four trillion, three hundred fifty-four billion, six hundred forty-six million, six hundred forty-six thousand, five hundred forty-two".