73406783394 has 144 divisors (see below), whose sum is σ = 201196300032. Its totient is φ = 18881102592.

The previous prime is 73406783357. The next prime is 73406783407. The reversal of 73406783394 is 49338760437.

It is a happy number.

73406783394 is a `hidden beast` number, since 73 + 406 + 7 + 83 + 3 + 94 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 73406783394.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1100727 + ... + 1165509.

It is an arithmetic number, because the mean of its divisors is an integer number (1397196528).

Almost surely, 2^73406783394 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 73406783394, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100598150016).

73406783394 is an abundant number, since it is smaller than the sum of its proper divisors (127789516638).

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

73406783394 is a wasteful number, since it uses less digits than its factorization.

73406783394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64861 (or 64835 counting only the distinct ones).

The product of its (nonzero) digits is 9144576, while the sum is 54.

The spelling of 73406783394 in words is "seventy-three billion, four hundred six million, seven hundred eighty-three thousand, three hundred ninety-four".