67278793940 has 24 divisors (see below), whose sum is σ = 141902444040. Its totient is φ = 26793998208.

The previous prime is 67278793927. The next prime is 67278793943. The reversal of 67278793940 is 4939787276.

67278793940 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 37170297616 + 30108496324 = 192796^2 + 173518^2 .

It is a super-2 number, since 2×67278793940² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67278793943) 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, 7340267 + ... + 7349426.

It is an arithmetic number, because the mean of its divisors is an integer number (5912601835).

Almost surely, 2^67278793940 is an apocalyptic number.

It is an amenable number.

67278793940 is an abundant number, since it is smaller than the sum of its proper divisors (74623650100).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

67278793940 is a wasteful number, since it uses less digits than its factorization.

67278793940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14689931 (or 14689929 counting only the distinct ones).

The product of its (nonzero) digits is 32006016, while the sum is 62.

The spelling of 67278793940 in words is "sixty-seven billion, two hundred seventy-eight million, seven hundred ninety-three thousand, nine hundred forty".