64689269380 has 24 divisors (see below), whose sum is σ = 143838493848. Its totient is φ = 24353607168.

The previous prime is 64689269371. The next prime is 64689269383. The reversal of 64689269380 is 8396298646.

It can be written as a sum of positive squares in 4 ways, for example, as 537497856 + 64151771524 = 23184^2 + 253282^2 .

It is not an unprimeable number, because it can be changed into a prime (64689269383) 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, 95130939 + ... + 95131618.

It is an arithmetic number, because the mean of its divisors is an integer number (5993270577).

Almost surely, 2^64689269380 is an apocalyptic number.

It is an amenable number.

64689269380 is an abundant number, since it is smaller than the sum of its proper divisors (79149224468).

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

64689269380 is a wasteful number, since it uses less digits than its factorization.

64689269380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190262583 (or 190262581 counting only the distinct ones).

The product of its (nonzero) digits is 26873856, while the sum is 61.

The spelling of 64689269380 in words is "sixty-four billion, six hundred eighty-nine million, two hundred sixty-nine thousand, three hundred eighty".