65403000000 has 882 divisors, whose sum is σ = 259642223412. Its totient is φ = 15724800000.

The previous prime is 65402999999. The next prime is 65403000023. The reversal of 65403000000 is 30456.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 125 ways as a sum of consecutive naturals, for example, 1520999979 + ... + 1521000021.

Almost surely, 2^65403000000 is an apocalyptic number.

65403000000 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65403000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129821111706).

65403000000 is an abundant number, since it is smaller than the sum of its proper divisors (194239223412).

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

65403000000 is an equidigital number, since it uses as much as digits as its factorization.

65403000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117 (or 66 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

Adding to 65403000000 its reverse (30456), we get a palindrome (65403030456).

The spelling of 65403000000 in words is "sixty-five billion, four hundred three million", and thus it is an aban number.