287880640501 has 4 divisors (see below), whose sum is σ = 300397190112. Its totient is φ = 275364090892.

The previous prime is 287880640499. The next prime is 287880640549. The reversal of 287880640501 is 105046088782.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 287880640501 - 2¹ = 287880640499 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (287880640301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6258274771 + ... + 6258274816.

It is an arithmetic number, because the mean of its divisors is an integer number (75099297528).

Almost surely, 2^287880640501 is an apocalyptic number.

It is an amenable number.

287880640501 is a deficient number, since it is larger than the sum of its proper divisors (12516549611).

287880640501 is a wasteful number, since it uses less digits than its factorization.

287880640501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12516549610.

The product of its (nonzero) digits is 860160, while the sum is 49.

The spelling of 287880640501 in words is "two hundred eighty-seven billion, eight hundred eighty million, six hundred forty thousand, five hundred one".