84163901562506 has 4 divisors (see below), whose sum is σ = 126245852343762. Its totient is φ = 42081950781252.

The previous prime is 84163901562463. The next prime is 84163901562539. The reversal of 84163901562506 is 60526510936148.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 59627878604281 + 24536022958225 = 7721909^2 + 4953385^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21040975390625 + ... + 21040975390628.

Almost surely, 2^{84163901562506} is an apocalyptic number.

84163901562506 is a deficient number, since it is larger than the sum of its proper divisors (42081950781256).

84163901562506 is a wasteful number, since it uses less digits than its factorization.

84163901562506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42081950781255.

The product of its (nonzero) digits is 9331200, while the sum is 56.

The spelling of 84163901562506 in words is "eighty-four trillion, one hundred sixty-three billion, nine hundred one million, five hundred sixty-two thousand, five hundred six".