67540574043 has 12 divisors (see below), whose sum is σ = 97574265360. Its totient is φ = 45019822416.

The previous prime is 67540574041. The next prime is 67540574053. The reversal of 67540574043 is 34047504576.

67540574043 is a `hidden beast` number, since 6 + 75 + 4 + 0 + 574 + 0 + 4 + 3 = 666.

It is not a de Polignac number, because 67540574043 - 2¹ = 67540574041 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 67540574043.

It is not an unprimeable number, because it can be changed into a prime (67540574041) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 542748 + ... + 655481.

It is an arithmetic number, because the mean of its divisors is an integer number (8131188780).

Almost surely, 2^67540574043 is an apocalyptic number.

67540574043 is a deficient number, since it is larger than the sum of its proper divisors (30033691317).

67540574043 is a wasteful number, since it uses less digits than its factorization.

67540574043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1204498 (or 1204495 counting only the distinct ones).

The product of its (nonzero) digits is 1411200, while the sum is 45.

The spelling of 67540574043 in words is "sixty-seven billion, five hundred forty million, five hundred seventy-four thousand, forty-three".