70509491644 has 12 divisors (see below), whose sum is σ = 129885905800. Its totient is φ = 33399232848.

The previous prime is 70509491641. The next prime is 70509491653. The reversal of 70509491644 is 44619490507.

It is a super-3 number, since 3×70509491644³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70509491641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 463878159 + ... + 463878310.

Almost surely, 2^70509491644 is an apocalyptic number.

It is an amenable number.

70509491644 is a deficient number, since it is larger than the sum of its proper divisors (59376414156).

70509491644 is a wasteful number, since it uses less digits than its factorization.

70509491644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 927756492 (or 927756490 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 49.

The spelling of 70509491644 in words is "seventy billion, five hundred nine million, four hundred ninety-one thousand, six hundred forty-four".