70551638659 has 4 divisors (see below), whose sum is σ = 70552177416. Its totient is φ = 70551099904.

The previous prime is 70551638639. The next prime is 70551638671. The reversal of 70551638659 is 95683615507.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 70551638659 - 2²¹ = 70549541507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70551638639) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67392 + ... + 381634.

It is an arithmetic number, because the mean of its divisors is an integer number (17638044354).

Almost surely, 2^70551638659 is an apocalyptic number.

70551638659 is a deficient number, since it is larger than the sum of its proper divisors (538757).

70551638659 is a wasteful number, since it uses less digits than its factorization.

70551638659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538756.

The product of its (nonzero) digits is 6804000, while the sum is 55.

The spelling of 70551638659 in words is "seventy billion, five hundred fifty-one million, six hundred thirty-eight thousand, six hundred fifty-nine".