67467485521 has 4 divisors (see below), whose sum is σ = 67479109632. Its totient is φ = 67455861412.

The previous prime is 67467485483. The next prime is 67467485549. The reversal of 67467485521 is 12558476476.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67467485521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67467485581) 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, 5803345 + ... + 5814958.

It is an arithmetic number, because the mean of its divisors is an integer number (16869777408).

Almost surely, 2^67467485521 is an apocalyptic number.

It is an amenable number.

67467485521 is a deficient number, since it is larger than the sum of its proper divisors (11624111).

67467485521 is a wasteful number, since it uses less digits than its factorization.

67467485521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11624110.

The product of its digits is 11289600, while the sum is 55.

The spelling of 67467485521 in words is "sixty-seven billion, four hundred sixty-seven million, four hundred eighty-five thousand, five hundred twenty-one".