70138138820 has 24 divisors (see below), whose sum is σ = 147571738944. Its totient is φ = 28001608416.

The previous prime is 70138138799. The next prime is 70138138823. The reversal of 70138138820 is 2883183107.

It is not an unprimeable number, because it can be changed into a prime (70138138823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3342224 + ... + 3363143.

It is an arithmetic number, because the mean of its divisors is an integer number (6148822456).

Almost surely, 2^70138138820 is an apocalyptic number.

It is an amenable number.

70138138820 is an abundant number, since it is smaller than the sum of its proper divisors (77433600124).

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

70138138820 is a wasteful number, since it uses less digits than its factorization.

70138138820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6705899 (or 6705897 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 41.

The spelling of 70138138820 in words is "seventy billion, one hundred thirty-eight million, one hundred thirty-eight thousand, eight hundred twenty".