6404772067240 has 64 divisors (see below), whose sum is σ = 14665220444160. Its totient is φ = 2517059059200.

The previous prime is 6404772067223. The next prime is 6404772067247. The reversal of 6404772067240 is 427602774046.

It is a super-2 number, since 2×6404772067240² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6404772067247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5597061 + ... + 6643540.

It is an arithmetic number, because the mean of its divisors is an integer number (229144069440).

Almost surely, 2^{6404772067240} is an apocalyptic number.

It is an amenable number.

6404772067240 is an abundant number, since it is smaller than the sum of its proper divisors (8260448376920).

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

6404772067240 is a wasteful number, since it uses less digits than its factorization.

6404772067240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12240842 (or 12240838 counting only the distinct ones).

The product of its (nonzero) digits is 3161088, while the sum is 49.

The spelling of 6404772067240 in words is "six trillion, four hundred four billion, seven hundred seventy-two million, sixty-seven thousand, two hundred forty".