75277280387 has 4 divisors (see below), whose sum is σ = 75285264960. Its totient is φ = 75269295816.

The previous prime is 75277280339. The next prime is 75277280401. The reversal of 75277280387 is 78308277257.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 75277280387 - 2¹⁴ = 75277264003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75277280317) 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 3 ways as a sum of consecutive naturals, for example, 3978128 + ... + 3997005.

It is an arithmetic number, because the mean of its divisors is an integer number (18821316240).

Almost surely, 2^75277280387 is an apocalyptic number.

75277280387 is a deficient number, since it is larger than the sum of its proper divisors (7984573).

75277280387 is an equidigital number, since it uses as much as digits as its factorization.

75277280387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7984572.

The product of its (nonzero) digits is 9219840, while the sum is 56.

The spelling of 75277280387 in words is "seventy-five billion, two hundred seventy-seven million, two hundred eighty thousand, three hundred eighty-seven".