65434300638 has 32 divisors (see below), whose sum is σ = 152386085376. Its totient is φ = 18342768288.

The previous prime is 65434300609. The next prime is 65434300667. The reversal of 65434300638 is 83600343456.

65434300638 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (65434300609) and next prime (65434300667).

It is a super-3 number, since 3×65434300638³ (a number of 33 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 65434300638.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14695506 + ... + 14699957.

It is an arithmetic number, because the mean of its divisors is an integer number (4762065168).

Almost surely, 2^65434300638 is an apocalyptic number.

65434300638 is an abundant number, since it is smaller than the sum of its proper divisors (86951784738).

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

65434300638 is a wasteful number, since it uses less digits than its factorization.

65434300638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29395528.

The product of its (nonzero) digits is 622080, while the sum is 42.

The spelling of 65434300638 in words is "sixty-five billion, four hundred thirty-four million, three hundred thousand, six hundred thirty-eight".