84064340461 has 4 divisors (see below), whose sum is σ = 84064920832. Its totient is φ = 84063760092.

The previous prime is 84064340453. The next prime is 84064340471. The reversal of 84064340461 is 16404346048.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 84064340461 - 2³ = 84064340453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84064340431) 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, 127156 + ... + 429298.

It is an arithmetic number, because the mean of its divisors is an integer number (21016230208).

Almost surely, 2^84064340461 is an apocalyptic number.

It is an amenable number.

84064340461 is a deficient number, since it is larger than the sum of its proper divisors (580371).

84064340461 is a wasteful number, since it uses less digits than its factorization.

84064340461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 580370.

The product of its (nonzero) digits is 221184, while the sum is 40.

The spelling of 84064340461 in words is "eighty-four billion, sixty-four million, three hundred forty thousand, four hundred sixty-one".