64906774309740 has 96 divisors (see below), whose sum is σ = 199447882550784. Its totient is φ = 15640754152960.

The previous prime is 64906774309687. The next prime is 64906774309747. The reversal of 64906774309740 is 4790347760946.

64906774309740 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is not an unprimeable number, because it can be changed into a prime (64906774309747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 294331689 + ... + 294552128.

It is an arithmetic number, because the mean of its divisors is an integer number (2077582109904).

Almost surely, 2^{64906774309740} is an apocalyptic number.

64906774309740 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

64906774309740 is an abundant number, since it is smaller than the sum of its proper divisors (134541108241044).

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

64906774309740 is a wasteful number, since it uses less digits than its factorization.

64906774309740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 588884007 (or 588884005 counting only the distinct ones).

The product of its (nonzero) digits is 192036096, while the sum is 66.

The spelling of 64906774309740 in words is "sixty-four trillion, nine hundred six billion, seven hundred seventy-four million, three hundred nine thousand, seven hundred forty".