73125786438 has 96 divisors (see below), whose sum is σ = 168771133440. Its totient is φ = 22817894400.

The previous prime is 73125786421. The next prime is 73125786443. The reversal of 73125786438 is 83468752137.

It is a happy number.

73125786438 is a `hidden beast` number, since 7 + 3 + 1 + 2 + 578 + 64 + 3 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11159263 + ... + 11165813.

It is an arithmetic number, because the mean of its divisors is an integer number (1758032640).

Almost surely, 2^73125786438 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 73125786438, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84385566720).

73125786438 is an abundant number, since it is smaller than the sum of its proper divisors (95645347002).

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

73125786438 is a wasteful number, since it uses less digits than its factorization.

73125786438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6962 (or 6959 counting only the distinct ones).

The product of its digits is 6773760, while the sum is 54.

The spelling of 73125786438 in words is "seventy-three billion, one hundred twenty-five million, seven hundred eighty-six thousand, four hundred thirty-eight".