75505280149 has 16 divisors (see below), whose sum is σ = 82711520640. Its totient is φ = 68499345600.

The previous prime is 75505280143. The next prime is 75505280161. The reversal of 75505280149 is 94108250557.

It is a cyclic number.

It is not a de Polignac number, because 75505280149 - 2¹³ = 75505271957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 75505280099 and 75505280108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75505280143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4095019 + ... + 4113415.

It is an arithmetic number, because the mean of its divisors is an integer number (5169470040).

Almost surely, 2^75505280149 is an apocalyptic number.

It is an amenable number.

75505280149 is a deficient number, since it is larger than the sum of its proper divisors (7206240491).

75505280149 is a wasteful number, since it uses less digits than its factorization.

75505280149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23820.

The product of its (nonzero) digits is 504000, while the sum is 46.

The spelling of 75505280149 in words is "seventy-five billion, five hundred five million, two hundred eighty thousand, one hundred forty-nine".