10020257247 has 96 divisors (see below), whose sum is σ = 18133549056. Its totient is φ = 4779216000.

The previous prime is 10020257239. The next prime is 10020257251. The reversal of 10020257247 is 74275202001.

It is not a de Polignac number, because 10020257247 - 2³ = 10020257239 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10020252247) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 8705122 + ... + 8706272.

It is an arithmetic number, because the mean of its divisors is an integer number (188891136).

Almost surely, 2^10020257247 is an apocalyptic number.

10020257247 is a deficient number, since it is larger than the sum of its proper divisors (8113291809).

10020257247 is a wasteful number, since it uses less digits than its factorization.

10020257247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1421 (or 1408 counting only the distinct ones).

The product of its (nonzero) digits is 7840, while the sum is 30.

Adding to 10020257247 its reverse (74275202001), we get a palindrome (84295459248).

The spelling of 10020257247 in words is "ten billion, twenty million, two hundred fifty-seven thousand, two hundred forty-seven".