497851949987 has 16 divisors (see below), whose sum is σ = 569735534592. Its totient is φ = 426159071520.

The previous prime is 497851949981. The next prime is 497851949999. The reversal of 497851949987 is 789949158794.

It is a happy number.

It is not a de Polignac number, because 497851949987 - 2¹⁰ = 497851948963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (497851949981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39358898 + ... + 39371544.

It is an arithmetic number, because the mean of its divisors is an integer number (35608470912).

Almost surely, 2^497851949987 is an apocalyptic number.

497851949987 is a deficient number, since it is larger than the sum of its proper divisors (71883584605).

497851949987 is a wasteful number, since it uses less digits than its factorization.

497851949987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19738.

The product of its digits is 1646023680, while the sum is 80.

The spelling of 497851949987 in words is "four hundred ninety-seven billion, eight hundred fifty-one million, nine hundred forty-nine thousand, nine hundred eighty-seven".