65237428499 has 4 divisors (see below), whose sum is σ = 65434520760. Its totient is φ = 65040336240.

The previous prime is 65237428441. The next prime is 65237428507. The reversal of 65237428499 is 99482473256.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65237428499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65237428409) 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, 98545634 + ... + 98546295.

It is an arithmetic number, because the mean of its divisors is an integer number (16358630190).

Almost surely, 2^65237428499 is an apocalyptic number.

65237428499 is a deficient number, since it is larger than the sum of its proper divisors (197092261).

65237428499 is a wasteful number, since it uses less digits than its factorization.

65237428499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197092260.

The product of its digits is 26127360, while the sum is 59.

The spelling of 65237428499 in words is "sixty-five billion, two hundred thirty-seven million, four hundred twenty-eight thousand, four hundred ninety-nine".