65531500238 has 16 divisors (see below), whose sum is σ = 99169410480. Its totient is φ = 32475816000.

The previous prime is 65531500163. The next prime is 65531500241. The reversal of 65531500238 is 83200513556.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29033 + ... + 363188.

It is an arithmetic number, because the mean of its divisors is an integer number (6198088155).

Almost surely, 2^65531500238 is an apocalyptic number.

65531500238 is a deficient number, since it is larger than the sum of its proper divisors (33637910242).

65531500238 is a wasteful number, since it uses less digits than its factorization.

65531500238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392963.

The product of its (nonzero) digits is 108000, while the sum is 38.

The spelling of 65531500238 in words is "sixty-five billion, five hundred thirty-one million, five hundred thousand, two hundred thirty-eight".