75724751273 has 8 divisors (see below), whose sum is σ = 77580667080. Its totient is φ = 73869262720.

The previous prime is 75724751231. The next prime is 75724751321. The reversal of 75724751273 is 37215742757.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 38949785449 + 36774965824 = 197357^2 + 191768^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 75724751273 - 2¹² = 75724747177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75724751213) 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 7 ways as a sum of consecutive naturals, for example, 267911 + ... + 472467.

It is an arithmetic number, because the mean of its divisors is an integer number (9697583385).

Almost surely, 2^75724751273 is an apocalyptic number.

It is an amenable number.

75724751273 is a deficient number, since it is larger than the sum of its proper divisors (1855915807).

75724751273 is a wasteful number, since it uses less digits than its factorization.

75724751273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213627.

The product of its digits is 2881200, while the sum is 50.

The spelling of 75724751273 in words is "seventy-five billion, seven hundred twenty-four million, seven hundred fifty-one thousand, two hundred seventy-three".