70788478661 has 8 divisors (see below), whose sum is σ = 71050188480. Its totient is φ = 70526850912.

The previous prime is 70788478639. The next prime is 70788478681. The reversal of 70788478661 is 16687488707.

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

It is a cyclic number.

It is not a de Polignac number, because 70788478661 - 2²² = 70784284357 is a prime.

It is a super-3 number, since 3×70788478661³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 70788478594 and 70788478603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70788478681) 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 7 ways as a sum of consecutive naturals, for example, 2114096 + ... + 2147318.

It is an arithmetic number, because the mean of its divisors is an integer number (8881273560).

Almost surely, 2^70788478661 is an apocalyptic number.

It is an amenable number.

70788478661 is a deficient number, since it is larger than the sum of its proper divisors (261709819).

70788478661 is a wasteful number, since it uses less digits than its factorization.

70788478661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41035.

The product of its (nonzero) digits is 25288704, while the sum is 62.

The spelling of 70788478661 in words is "seventy billion, seven hundred eighty-eight million, four hundred seventy-eight thousand, six hundred sixty-one".