67778972701 has 8 divisors (see below), whose sum is σ = 74631733344. Its totient is φ = 61041384720.

The previous prime is 67778972693. The next prime is 67778972731. The reversal of 67778972701 is 10727987776.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 67778972701 - 2³ = 67778972693 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 67778972701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67778972731) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28791930 + ... + 28794283.

It is an arithmetic number, because the mean of its divisors is an integer number (9328966668).

Almost surely, 2^67778972701 is an apocalyptic number.

It is an amenable number.

67778972701 is a deficient number, since it is larger than the sum of its proper divisors (6852760643).

67778972701 is a wasteful number, since it uses less digits than its factorization.

67778972701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57586331.

The product of its (nonzero) digits is 14521248, while the sum is 61.

The spelling of 67778972701 in words is "sixty-seven billion, seven hundred seventy-eight million, nine hundred seventy-two thousand, seven hundred one".