70644776536 has 16 divisors (see below), whose sum is σ = 134958182400. Its totient is φ = 34655927904.

The previous prime is 70644776509. The next prime is 70644776539. The reversal of 70644776536 is 63567744607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70644776539) 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 3 ways as a sum of consecutive naturals, for example, 83307096 + ... + 83307943.

It is an arithmetic number, because the mean of its divisors is an integer number (8434886400).

Almost surely, 2^70644776536 is an apocalyptic number.

It is an amenable number.

70644776536 is a deficient number, since it is larger than the sum of its proper divisors (64313405864).

70644776536 is a wasteful number, since it uses less digits than its factorization.

70644776536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166615098 (or 166615094 counting only the distinct ones).

The product of its (nonzero) digits is 17781120, while the sum is 55.

The spelling of 70644776536 in words is "seventy billion, six hundred forty-four million, seven hundred seventy-six thousand, five hundred thirty-six".