73878917040 has 120 divisors (see below), whose sum is σ = 250668102048. Its totient is φ = 19497922560.

The previous prime is 73878917039. The next prime is 73878917051. The reversal of 73878917040 is 4071987837.

It is a tau number, because it is divible by the number of its divisors (120).

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, 459076 + ... + 598755.

Almost surely, 2^73878917040 is an apocalyptic number.

It is an amenable number.

73878917040 is an abundant number, since it is smaller than the sum of its proper divisors (176789185008).

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

73878917040 is a wasteful number, since it uses less digits than its factorization.

73878917040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1057947 (or 1057938 counting only the distinct ones).

The product of its (nonzero) digits is 2370816, while the sum is 54.

The spelling of 73878917040 in words is "seventy-three billion, eight hundred seventy-eight million, nine hundred seventeen thousand, forty".