70721062811 has 8 divisors (see below), whose sum is σ = 82795390944. Its totient is φ = 59139564480.

The previous prime is 70721062793. The next prime is 70721062847. The reversal of 70721062811 is 11826012707.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70721062811 is a prime.

It is not an unprimeable number, because it can be changed into a prime (70721062411) 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, 123207140 + ... + 123207713.

It is an arithmetic number, because the mean of its divisors is an integer number (10349423868).

Almost surely, 2^70721062811 is an apocalyptic number.

70721062811 is a deficient number, since it is larger than the sum of its proper divisors (12074328133).

70721062811 is a wasteful number, since it uses less digits than its factorization.

70721062811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246414901.

The product of its (nonzero) digits is 9408, while the sum is 35.

The spelling of 70721062811 in words is "seventy billion, seven hundred twenty-one million, sixty-two thousand, eight hundred eleven".