65423557915 has 8 divisors (see below), whose sum is σ = 78962075568. Its totient is φ = 52036308960.

The previous prime is 65423557873. The next prime is 65423557919. The reversal of 65423557915 is 51975532456.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 65423557915 - 2¹⁷ = 65423426843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65423557919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37816221 + ... + 37817950.

It is an arithmetic number, because the mean of its divisors is an integer number (9870259446).

Almost surely, 2^65423557915 is an apocalyptic number.

65423557915 is a deficient number, since it is larger than the sum of its proper divisors (13538517653).

65423557915 is a wasteful number, since it uses less digits than its factorization.

65423557915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75634349.

The product of its digits is 5670000, while the sum is 52.

The spelling of 65423557915 in words is "sixty-five billion, four hundred twenty-three million, five hundred fifty-seven thousand, nine hundred fifteen".