65237428508 has 18 divisors (see below), whose sum is σ = 132804765576. Its totient is φ = 27958897848.

The previous prime is 65237428507. The next prime is 65237428573. The reversal of 65237428508 is 80582473256.

It is a super-2 number, since 2×65237428508² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65237428507) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 166421816 + ... + 166422207.

It is an arithmetic number, because the mean of its divisors is an integer number (7378042532).

Almost surely, 2^65237428508 is an apocalyptic number.

It is an amenable number.

65237428508 is an abundant number, since it is smaller than the sum of its proper divisors (67567337068).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65237428508 is a wasteful number, since it uses less digits than its factorization.

65237428508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332844041 (or 332844032 counting only the distinct ones).

The product of its (nonzero) digits is 3225600, while the sum is 50.

The spelling of 65237428508 in words is "sixty-five billion, two hundred thirty-seven million, four hundred twenty-eight thousand, five hundred eight".