75251037394387 has 2 divisors, whose sum is σ = 75251037394388. Its totient is φ = 75251037394386.

The previous prime is 75251037394321. The next prime is 75251037394409. The reversal of 75251037394387 is 78349373015257.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 75251037394387 - 2¹⁹ = 75251036870099 is a prime.

It is a super-2 number, since 2×75251037394387² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (75251037394187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37625518697193 + 37625518697194.

It is an arithmetic number, because the mean of its divisors is an integer number (37625518697194).

Almost surely, 2^{75251037394387} is an apocalyptic number.

75251037394387 is a deficient number, since it is larger than the sum of its proper divisors (1).

75251037394387 is an equidigital number, since it uses as much as digits as its factorization.

75251037394387 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 133358400, while the sum is 64.

The spelling of 75251037394387 in words is "seventy-five trillion, two hundred fifty-one billion, thirty-seven million, three hundred ninety-four thousand, three hundred eighty-seven".