73251214040 has 64 divisors (see below), whose sum is σ = 168061158720. Its totient is φ = 28728000000.

The previous prime is 73251213991. The next prime is 73251214067. The reversal of 73251214040 is 4041215237.

It is a junction number, because it is equal to n+sod(n) for n = 73251213994 and 73251214012.

It is a congruent number.

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, 442790 + ... + 585290.

It is an arithmetic number, because the mean of its divisors is an integer number (2625955605).

Almost surely, 2^73251214040 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 73251214040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84030579360).

73251214040 is an abundant number, since it is smaller than the sum of its proper divisors (94809944680).

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

73251214040 is a wasteful number, since it uses less digits than its factorization.

73251214040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142764 (or 142760 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 29.

Adding to 73251214040 its reverse (4041215237), we get a palindrome (77292429277).

The spelling of 73251214040 in words is "seventy-three billion, two hundred fifty-one million, two hundred fourteen thousand, forty".