64819227827824 has 40 divisors (see below), whose sum is σ = 125919282792960. Its totient is φ = 32323934592768.

The previous prime is 64819227827821. The next prime is 64819227827831. The reversal of 64819227827824 is 42872872291846.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64819227827821) 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, 207147774 + ... + 207460450.

It is an arithmetic number, because the mean of its divisors is an integer number (3147982069824).

Almost surely, 2^{64819227827824} is an apocalyptic number.

It is an amenable number.

64819227827824 is a deficient number, since it is larger than the sum of its proper divisors (61100054965136).

64819227827824 is a wasteful number, since it uses less digits than its factorization.

64819227827824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346897 (or 346891 counting only the distinct ones).

The product of its digits is 346816512, while the sum is 70.

The spelling of 64819227827824 in words is "sixty-four trillion, eight hundred nineteen billion, two hundred twenty-seven million, eight hundred twenty-seven thousand, eight hundred twenty-four".