67991256101 has 8 divisors (see below), whose sum is σ = 72020793600. Its totient is φ = 63965057728.

The previous prime is 67991256071. The next prime is 67991256127. The reversal of 67991256101 is 10165219976.

67991256101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 67991256101 - 2²⁶ = 67924147237 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 (67991256181) 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, 792791 + ... + 874356.

It is an arithmetic number, because the mean of its divisors is an integer number (9002599200).

Almost surely, 2^67991256101 is an apocalyptic number.

It is an amenable number.

67991256101 is a deficient number, since it is larger than the sum of its proper divisors (4029537499).

67991256101 is a wasteful number, since it uses less digits than its factorization.

67991256101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1669563.

The product of its (nonzero) digits is 204120, while the sum is 47.

The spelling of 67991256101 in words is "sixty-seven billion, nine hundred ninety-one million, two hundred fifty-six thousand, one hundred one".