287697972267 has 12 divisors (see below), whose sum is σ = 417378429520. Its totient is φ = 190961098128.

The previous prime is 287697972253. The next prime is 287697972299. The reversal of 287697972267 is 762279796782.

It is not a de Polignac number, because 287697972267 - 2¹⁰ = 287697971243 is a prime.

It is a super-2 number, since 2×287697972267² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 287697972195 and 287697972204.

It is not an unprimeable number, because it can be changed into a prime (287697972217) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 69793663 + ... + 69797784.

Almost surely, 2^287697972267 is an apocalyptic number.

287697972267 is a deficient number, since it is larger than the sum of its proper divisors (129680457253).

287697972267 is a wasteful number, since it uses less digits than its factorization.

287697972267 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139591682 (or 139591679 counting only the distinct ones).

The product of its digits is 448084224, while the sum is 72.

The spelling of 287697972267 in words is "two hundred eighty-seven billion, six hundred ninety-seven million, nine hundred seventy-two thousand, two hundred sixty-seven".