73977544878 has 8 divisors (see below), whose sum is σ = 147955089768. Its totient is φ = 24659181624.

The previous prime is 73977544859. The next prime is 73977544889. The reversal of 73977544878 is 87844577937.

It is a sphenic number, since it is the product of 3 distinct primes.

73977544878 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6164795401 + ... + 6164795412.

It is an arithmetic number, because the mean of its divisors is an integer number (18494386221).

Almost surely, 2^73977544878 is an apocalyptic number.

73977544878 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

73977544878 is a wasteful number, since it uses less digits than its factorization.

73977544878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12329590818.

The product of its digits is 331914240, while the sum is 69.

The spelling of 73977544878 in words is "seventy-three billion, nine hundred seventy-seven million, five hundred forty-four thousand, eight hundred seventy-eight".