73161778888 has 64 divisors (see below), whose sum is σ = 150703571520. Its totient is φ = 33021523200.

The previous prime is 73161778849. The next prime is 73161778897. The reversal of 73161778888 is 88887716137.

It is a super-3 number, since 3×73161778888³ (a number of 34 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14323231 + ... + 14328337.

It is an arithmetic number, because the mean of its divisors is an integer number (2354743305).

Almost surely, 2^73161778888 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 73161778888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75351785760).

73161778888 is an abundant number, since it is smaller than the sum of its proper divisors (77541792632).

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

73161778888 is a wasteful number, since it uses less digits than its factorization.

73161778888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6238 (or 6234 counting only the distinct ones).

The product of its digits is 25288704, while the sum is 64.

The spelling of 73161778888 in words is "seventy-three billion, one hundred sixty-one million, seven hundred seventy-eight thousand, eight hundred eighty-eight".