67540624487 has 12 divisors (see below), whose sum is σ = 81996924720. Its totient is φ = 54486552576.

The previous prime is 67540624457. The next prime is 67540624499. The reversal of 67540624487 is 78442604576.

It is a de Polignac number, because none of the positive numbers 2^k-67540624487 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 (67540624457) 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, 16691162 + ... + 16695207.

It is an arithmetic number, because the mean of its divisors is an integer number (6833077060).

Almost surely, 2^67540624487 is an apocalyptic number.

67540624487 is a deficient number, since it is larger than the sum of its proper divisors (14456300233).

67540624487 is a wasteful number, since it uses less digits than its factorization.

67540624487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33386410 (or 33386393 counting only the distinct ones).

The product of its (nonzero) digits is 9031680, while the sum is 53.

The spelling of 67540624487 in words is "sixty-seven billion, five hundred forty million, six hundred twenty-four thousand, four hundred eighty-seven".