247687949786742 has 48 divisors (see below), whose sum is σ = 536728430141280. Its totient is φ = 82551696134400.

The previous prime is 247687949786731. The next prime is 247687949786743.

247687949786742 is a `hidden beast` number, since 2 + 4 + 7 + 6 + 8 + 79 + 497 + 8 + 6 + 7 + 42 = 666.

247687949786742 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×247687949786742² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247687949786743) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6834449742 + ... + 6834485982.

It is an arithmetic number, because the mean of its divisors is an integer number (11181842294610).

Almost surely, 2^{247687949786742} is an apocalyptic number.

247687949786742 is an abundant number, since it is smaller than the sum of its proper divisors (289040480354538).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

247687949786742 is a wasteful number, since it uses less digits than its factorization.

247687949786742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76149 (or 76146 counting only the distinct ones).

The product of its digits is 114709561344, while the sum is 90.

The spelling of 247687949786742 in words is "two hundred forty-seven trillion, six hundred eighty-seven billion, nine hundred forty-nine million, seven hundred eighty-six thousand, seven hundred forty-two".