67400740655 has 32 divisors (see below), whose sum is σ = 86507688960. Its totient is φ = 50290732800.

The previous prime is 67400740621. The next prime is 67400740663. The reversal of 67400740655 is 55604700476.

It is not a de Polignac number, because 67400740655 - 2¹⁴ = 67400724271 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2960606 + ... + 2983284.

It is an arithmetic number, because the mean of its divisors is an integer number (2703365280).

Almost surely, 2^67400740655 is an apocalyptic number.

67400740655 is a deficient number, since it is larger than the sum of its proper divisors (19106948305).

67400740655 is a wasteful number, since it uses less digits than its factorization.

67400740655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23351.

The product of its (nonzero) digits is 705600, while the sum is 44.

The spelling of 67400740655 in words is "sixty-seven billion, four hundred million, seven hundred forty thousand, six hundred fifty-five".