73478275388 has 96 divisors (see below), whose sum is σ = 159855575040. Its totient is φ = 28839395520.

The previous prime is 73478275363. The next prime is 73478275397. The reversal of 73478275388 is 88357287437.

It is a Harshad number since it is a multiple of its sum of digits (62).

It is a self number, because there is not a number n which added to its sum of digits gives 73478275388.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20167895 + ... + 20171537.

It is an arithmetic number, because the mean of its divisors is an integer number (1665162240).

Almost surely, 2^73478275388 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 73478275388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79927787520).

73478275388 is an abundant number, since it is smaller than the sum of its proper divisors (86377299652).

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

73478275388 is a wasteful number, since it uses less digits than its factorization.

73478275388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4927 (or 4925 counting only the distinct ones).

The product of its digits is 63221760, while the sum is 62.

The spelling of 73478275388 in words is "seventy-three billion, four hundred seventy-eight million, two hundred seventy-five thousand, three hundred eighty-eight".