75247474257 has 16 divisors (see below), whose sum is σ = 111493399680. Its totient is φ = 50157935856.

The previous prime is 75247474243. The next prime is 75247474273.

It is a happy number.

75247474257 is a `hidden beast` number, since 7 + 52 + 474 + 74 + 2 + 57 = 666.

75247474257 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 75247474257 - 2¹⁶ = 75247408721 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (75247476257) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3708 + ... + 387954.

It is an arithmetic number, because the mean of its divisors is an integer number (6968337480).

Almost surely, 2^75247474257 is an apocalyptic number.

It is an amenable number.

75247474257 is a deficient number, since it is larger than the sum of its proper divisors (36245925423).

75247474257 is a wasteful number, since it uses less digits than its factorization.

75247474257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391509 (or 391503 counting only the distinct ones).

The product of its digits is 15366400, while the sum is 54.

The spelling of 75247474257 in words is "seventy-five billion, two hundred forty-seven million, four hundred seventy-four thousand, two hundred fifty-seven".