280148962681 has 27 divisors (see below), whose sum is σ = 330223715013. Its totient is φ = 236974166520.

The previous prime is 280148962661. The next prime is 280148962739. The reversal of 280148962681 is 186269841082.

The square root of 280148962681 is 529291.

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

It is not a de Polignac number, because 280148962681 - 2⁷ = 280148962553 is a prime.

It is a super-2 number, since 2×280148962681² (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 (280148962661) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 307517616 + ... + 307518526.

Almost surely, 2^280148962681 is an apocalyptic number.

280148962681 is the 529291-st square number.

280148962681 is the 264646-th centered octagonal number.

It is an amenable number.

280148962681 is a deficient number, since it is larger than the sum of its proper divisors (50074752332).

280148962681 is an frugal number, since it uses more digits than its factorization.

280148962681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2002 (or 1001 counting only the distinct ones).

The product of its (nonzero) digits is 2654208, while the sum is 55.

The spelling of 280148962681 in words is "two hundred eighty billion, one hundred forty-eight million, nine hundred sixty-two thousand, six hundred eighty-one".