67780623947 has 4 divisors (see below), whose sum is σ = 67972637400. Its totient is φ = 67588610496.

The previous prime is 67780623919. The next prime is 67780624063. The reversal of 67780623947 is 74932608776.

67780623947 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 67780623947 - 2²⁶ = 67713515083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67780623917) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96006197 + ... + 96006902.

It is an arithmetic number, because the mean of its divisors is an integer number (16993159350).

Almost surely, 2^67780623947 is an apocalyptic number.

67780623947 is a deficient number, since it is larger than the sum of its proper divisors (192013453).

67780623947 is a wasteful number, since it uses less digits than its factorization.

67780623947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192013452.

The product of its (nonzero) digits is 21337344, while the sum is 59.

The spelling of 67780623947 in words is "sixty-seven billion, seven hundred eighty million, six hundred twenty-three thousand, nine hundred forty-seven".