67316021954 has 16 divisors (see below), whose sum is σ = 103516483896. Its totient is φ = 32811792000.

The previous prime is 67316021921. The next prime is 67316021963. The reversal of 67316021954 is 45912061376.

It can be written as a sum of positive squares in 4 ways, for example, as 4202021329 + 63114000625 = 64823^2 + 251225^2 .

It is a super-2 number, since 2×67316021954² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 208817 + ... + 422180.

Almost surely, 2^67316021954 is an apocalyptic number.

67316021954 is a deficient number, since it is larger than the sum of its proper divisors (36200461942).

67316021954 is a wasteful number, since it uses less digits than its factorization.

67316021954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 632341.

The product of its (nonzero) digits is 272160, while the sum is 44.

The spelling of 67316021954 in words is "sixty-seven billion, three hundred sixteen million, twenty-one thousand, nine hundred fifty-four".