67945671601 has 4 divisors (see below), whose sum is σ = 71521759600. Its totient is φ = 64369583604.

The previous prime is 67945671551. The next prime is 67945671613. The reversal of 67945671601 is 10617654976.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 67945671601 - 2⁷ = 67945671473 is a prime.

It is a super-2 number, since 2×67945671601² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67945678601) 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, 1788043971 + ... + 1788044008.

It is an arithmetic number, because the mean of its divisors is an integer number (17880439900).

Almost surely, 2^67945671601 is an apocalyptic number.

It is an amenable number.

67945671601 is a deficient number, since it is larger than the sum of its proper divisors (3576087999).

67945671601 is a wasteful number, since it uses less digits than its factorization.

67945671601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3576087998.

The product of its (nonzero) digits is 1905120, while the sum is 52.

The spelling of 67945671601 in words is "sixty-seven billion, nine hundred forty-five million, six hundred seventy-one thousand, six hundred one".