664567453672054 has 16 divisors (see below), whose sum is σ = 997101536486400. Its totient is φ = 332200276016040.

The previous prime is 664567453672039. The next prime is 664567453672081. The reversal of 664567453672054 is 450276354765466.

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, 1887847999 + ... + 1888199989.

It is an arithmetic number, because the mean of its divisors is an integer number (62318846030400).

Almost surely, 2^{664567453672054} is an apocalyptic number.

664567453672054 is a deficient number, since it is larger than the sum of its proper divisors (332534082814346).

664567453672054 is a wasteful number, since it uses less digits than its factorization.

664567453672054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 586395.

The product of its (nonzero) digits is 3048192000, while the sum is 70.

The spelling of 664567453672054 in words is "six hundred sixty-four trillion, five hundred sixty-seven billion, four hundred fifty-three million, six hundred seventy-two thousand, fifty-four".