4821638665475 has 24 divisors (see below), whose sum is σ = 6010106422320. Its totient is φ = 3837139886720.

The previous prime is 4821638665409. The next prime is 4821638665477. The reversal of 4821638665475 is 5745668361284.

It is not a de Polignac number, because 4821638665475 - 2²⁰ = 4821637616899 is a prime.

It is a hoax number, since the sum of its digits (65) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (4821638665477) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33432821 + ... + 33576729.

It is an arithmetic number, because the mean of its divisors is an integer number (250421100930).

Almost surely, 2^{4821638665475} is an apocalyptic number.

4821638665475 is a deficient number, since it is larger than the sum of its proper divisors (1188467756845).

4821638665475 is a wasteful number, since it uses less digits than its factorization.

4821638665475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150919 (or 150914 counting only the distinct ones).

The product of its digits is 232243200, while the sum is 65.

The spelling of 4821638665475 in words is "four trillion, eight hundred twenty-one billion, six hundred thirty-eight million, six hundred sixty-five thousand, four hundred seventy-five".