64403461236 has 24 divisors (see below), whose sum is σ = 151458012160. Its totient is φ = 21298781952.

The previous prime is 64403461229. The next prime is 64403461237. The reversal of 64403461236 is 63216430446.

It is a junction number, because it is equal to n+sod(n) for n = 64403461194 and 64403461203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64403461237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21128221 + ... + 21131268.

Almost surely, 2^64403461236 is an apocalyptic number.

It is an amenable number.

64403461236 is an abundant number, since it is smaller than the sum of its proper divisors (87054550924).

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

64403461236 is a wasteful number, since it uses less digits than its factorization.

64403461236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42259623 (or 42259621 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 39.

The spelling of 64403461236 in words is "sixty-four billion, four hundred three million, four hundred sixty-one thousand, two hundred thirty-six".