67540795308 has 72 divisors (see below), whose sum is σ = 195439741952. Its totient is φ = 19265535072.

The previous prime is 67540795277. The next prime is 67540795339. The reversal of 67540795308 is 80359704576.

67540795308 is a `hidden beast` number, since 6 + 7 + 540 + 7 + 95 + 3 + 0 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (67540795277) and next prime (67540795339).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 67810 + ... + 373737.

Almost surely, 2^67540795308 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67540795308, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97719870976).

67540795308 is an abundant number, since it is smaller than the sum of its proper divisors (127898946644).

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

67540795308 is a wasteful number, since it uses less digits than its factorization.

67540795308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442171 (or 442166 counting only the distinct ones).

The product of its (nonzero) digits is 6350400, while the sum is 54.

The spelling of 67540795308 in words is "sixty-seven billion, five hundred forty million, seven hundred ninety-five thousand, three hundred eight".