74257475247 has 32 divisors (see below), whose sum is σ = 112610572800. Its totient is φ = 48336051456.

The previous prime is 74257475231. The next prime is 74257475251.

It is a happy number.

74257475247 is a `hidden beast` number, since 7 + 42 + 5 + 74 + 7 + 524 + 7 = 666.

74257475247 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 74257475247 - 2⁴ = 74257475231 is a prime.

It is a super-2 number, since 2×74257475247² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 74257475193 and 74257475202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74257470247) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3669118 + ... + 3689300.

It is an arithmetic number, because the mean of its divisors is an integer number (3519080400).

Almost surely, 2^74257475247 is an apocalyptic number.

74257475247 is a deficient number, since it is larger than the sum of its proper divisors (38353097553).

74257475247 is a wasteful number, since it uses less digits than its factorization.

74257475247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23404 (or 23398 counting only the distinct ones).

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

The spelling of 74257475247 in words is "seventy-four billion, two hundred fifty-seven million, four hundred seventy-five thousand, two hundred forty-seven".