67547873961 has 24 divisors (see below), whose sum is σ = 100302218016. Its totient is φ = 43778266560.

The previous prime is 67547873923. The next prime is 67547873969. The reversal of 67547873961 is 16937874576.

67547873961 is a `hidden beast` number, since 6 + 7 + 5 + 478 + 73 + 96 + 1 = 666.

It is not a de Polignac number, because 67547873961 - 2²⁵ = 67514319529 is a prime.

It is a super-2 number, since 2×67547873961² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (67547873969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 218995 + ... + 427848.

It is an arithmetic number, because the mean of its divisors is an integer number (4179259084).

Almost surely, 2^67547873961 is an apocalyptic number.

It is an amenable number.

67547873961 is a deficient number, since it is larger than the sum of its proper divisors (32754344055).

67547873961 is a wasteful number, since it uses less digits than its factorization.

67547873961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 647173 (or 647170 counting only the distinct ones).

The product of its digits is 53343360, while the sum is 63.

The spelling of 67547873961 in words is "sixty-seven billion, five hundred forty-seven million, eight hundred seventy-three thousand, nine hundred sixty-one".