67980437251 has 4 divisors (see below), whose sum is σ = 67981691232. Its totient is φ = 67979183272.

The previous prime is 67980437219. The next prime is 67980437263. The reversal of 67980437251 is 15273408976.

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 67980437251 - 2⁵ = 67980437219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67980437201) 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, 541816 + ... + 655381.

It is an arithmetic number, because the mean of its divisors is an integer number (16995422808).

It is a 2-persistent number, because it is pandigital, and so is 2⋅67980437251 = 135960874502, but 3⋅67980437251 = 203941311753 is not.

Almost surely, 2^67980437251 is an apocalyptic number.

67980437251 is the 164901-st centered pentagonal number.

67980437251 is a deficient number, since it is larger than the sum of its proper divisors (1253981).

67980437251 is a wasteful number, since it uses less digits than its factorization.

67980437251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1253980.

The product of its (nonzero) digits is 2540160, while the sum is 52.

The spelling of 67980437251 in words is "sixty-seven billion, nine hundred eighty million, four hundred thirty-seven thousand, two hundred fifty-one".