64764041236 has 24 divisors (see below), whose sum is σ = 114509578176. Its totient is φ = 32048448960.

The previous prime is 64764041183. The next prime is 64764041239. The reversal of 64764041236 is 63214046746.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 64764041192 and 64764041201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64764041239) 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, 2865 + ... + 359911.

It is an arithmetic number, because the mean of its divisors is an integer number (4771232424).

Almost surely, 2^64764041236 is an apocalyptic number.

It is an amenable number.

64764041236 is a deficient number, since it is larger than the sum of its proper divisors (49745536940).

64764041236 is a wasteful number, since it uses less digits than its factorization.

64764041236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357519 (or 357517 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 43.

The spelling of 64764041236 in words is "sixty-four billion, seven hundred sixty-four million, forty-one thousand, two hundred thirty-six".