1604423456501 has 64 divisors (see below), whose sum is σ = 1799425622016. Its totient is φ = 1425379032000.

The previous prime is 1604423456491. The next prime is 1604423456527. The reversal of 1604423456501 is 1056543244061.

It is a cyclic number.

It is not a de Polignac number, because 1604423456501 - 2¹⁸ = 1604423194357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1604423456201) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 416623226 + ... + 416627076.

It is an arithmetic number, because the mean of its divisors is an integer number (28116025344).

Almost surely, 2^{1604423456501} is an apocalyptic number.

It is an amenable number.

1604423456501 is a deficient number, since it is larger than the sum of its proper divisors (195002165515).

1604423456501 is a wasteful number, since it uses less digits than its factorization.

1604423456501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4182.

The product of its (nonzero) digits is 345600, while the sum is 41.

The spelling of 1604423456501 in words is "one trillion, six hundred four billion, four hundred twenty-three million, four hundred fifty-six thousand, five hundred one".