64770830380 has 24 divisors (see below), whose sum is σ = 141932603232. Its totient is φ = 24781882752.

The previous prime is 64770830359. The next prime is 64770830381. The reversal of 64770830380 is 8303807746.

It is a super-2 number, since 2×64770830380² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a self number, because there is not a number n which added to its sum of digits gives 64770830380.

It is not an unprimeable number, because it can be changed into a prime (64770830381) 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, 70402617 + ... + 70403536.

It is an arithmetic number, because the mean of its divisors is an integer number (5913858468).

Almost surely, 2^64770830380 is an apocalyptic number.

It is an amenable number.

64770830380 is an abundant number, since it is smaller than the sum of its proper divisors (77161772852).

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

64770830380 is a wasteful number, since it uses less digits than its factorization.

64770830380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140806185 (or 140806183 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 46.

The spelling of 64770830380 in words is "sixty-four billion, seven hundred seventy million, eight hundred thirty thousand, three hundred eighty".