67544994494 has 4 divisors (see below), whose sum is σ = 101317491744. Its totient is φ = 33772497246.

The previous prime is 67544994479. The next prime is 67544994511. The reversal of 67544994494 is 49449944576.

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

It is a self number, because there is not a number n which added to its sum of digits gives 67544994494.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16886248622 + ... + 16886248625.

It is an arithmetic number, because the mean of its divisors is an integer number (25329372936).

Almost surely, 2^67544994494 is an apocalyptic number.

67544994494 is a deficient number, since it is larger than the sum of its proper divisors (33772497250).

67544994494 is a wasteful number, since it uses less digits than its factorization.

67544994494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33772497249.

The product of its digits is 156764160, while the sum is 65.

The spelling of 67544994494 in words is "sixty-seven billion, five hundred forty-four million, nine hundred ninety-four thousand, four hundred ninety-four".