39128064690 has 256 divisors, whose sum is σ = 114866035200. Its totient is φ = 8449459200.

The previous prime is 39128064673. The next prime is 39128064691. The reversal of 39128064690 is 9646082193.

It is a super-2 number, since 2×39128064690² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (39128064691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 21024360 + ... + 21026220.

It is an arithmetic number, because the mean of its divisors is an integer number (448695450).

Almost surely, 2^39128064690 is an apocalyptic number.

39128064690 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 39128064690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57433017600).

39128064690 is an abundant number, since it is smaller than the sum of its proper divisors (75737970510).

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

39128064690 is a wasteful number, since it uses less digits than its factorization.

39128064690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1950 (or 1924 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 48.

The spelling of 39128064690 in words is "thirty-nine billion, one hundred twenty-eight million, sixty-four thousand, six hundred ninety".