67780355061 has 16 divisors (see below), whose sum is σ = 92491274304. Its totient is φ = 44128527744.

The previous prime is 67780355017. The next prime is 67780355101. The reversal of 67780355061 is 16055308776.

67780355061 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 67780355061 - 2⁷ = 67780354933 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 67780355061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67780355561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 773305 + ... + 856481.

It is an arithmetic number, because the mean of its divisors is an integer number (5780704644).

Almost surely, 2^67780355061 is an apocalyptic number.

It is an amenable number.

67780355061 is a deficient number, since it is larger than the sum of its proper divisors (24710919243).

67780355061 is a wasteful number, since it uses less digits than its factorization.

67780355061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89540.

The product of its (nonzero) digits is 1058400, while the sum is 48.

The spelling of 67780355061 in words is "sixty-seven billion, seven hundred eighty million, three hundred fifty-five thousand, sixty-one".