247137242641 has 9 divisors (see below), whose sum is σ = 247857686409. Its totient is φ = 246418891236.

The previous prime is 247137242629. The next prime is 247137242687. The reversal of 247137242641 is 146242731742.

The square root of 247137242641 is 497129.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 247137242641 - 2⁵ = 247137242609 is a prime.

It is a super-2 number, since 2×247137242641² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (247131242641) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 279883186 + ... + 279884068.

Almost surely, 2^247137242641 is an apocalyptic number.

247137242641 is the 497129-th square number.

247137242641 is the 248565-th centered octagonal number.

It is an amenable number.

247137242641 is a deficient number, since it is larger than the sum of its proper divisors (720443768).

247137242641 is an frugal number, since it uses more digits than its factorization.

247137242641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2892 (or 1446 counting only the distinct ones).

The product of its digits is 451584, while the sum is 43.

The spelling of 247137242641 in words is "two hundred forty-seven billion, one hundred thirty-seven million, two hundred forty-two thousand, six hundred forty-one".