70551638661 has 8 divisors (see below), whose sum is σ = 107507258944. Its totient is φ = 40315222080.

The previous prime is 70551638639. The next prime is 70551638671. The reversal of 70551638661 is 16683615507.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 70551638661 - 2⁷ = 70551638533 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 70551638661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70551638671) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1679800900 + ... + 1679800941.

It is an arithmetic number, because the mean of its divisors is an integer number (13438407368).

Almost surely, 2^70551638661 is an apocalyptic number.

It is an amenable number.

70551638661 is a deficient number, since it is larger than the sum of its proper divisors (36955620283).

70551638661 is a wasteful number, since it uses less digits than its factorization.

70551638661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3359601851.

The product of its (nonzero) digits is 907200, while the sum is 48.

The spelling of 70551638661 in words is "seventy billion, five hundred fifty-one million, six hundred thirty-eight thousand, six hundred sixty-one".