73501251040 has 96 divisors (see below), whose sum is σ = 203293831104. Its totient is φ = 24585768960.

The previous prime is 73501251023. The next prime is 73501251049. The reversal of 73501251040 is 4015210537.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73501251049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 754399 + ... + 846238.

It is an arithmetic number, because the mean of its divisors is an integer number (2117644074).

Almost surely, 2^73501251040 is an apocalyptic number.

73501251040 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

73501251040 is an abundant number, since it is smaller than the sum of its proper divisors (129792580064).

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

73501251040 is a wasteful number, since it uses less digits than its factorization.

73501251040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1600700 (or 1600692 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 28.

Adding to 73501251040 its reverse (4015210537), we get a palindrome (77516461577).

The spelling of 73501251040 in words is "seventy-three billion, five hundred one million, two hundred fifty-one thousand, forty".