70729408110721 has 4 divisors (see below), whose sum is σ = 70922131293952. Its totient is φ = 70536684927492.

The previous prime is 70729408110707. The next prime is 70729408110731. The reversal of 70729408110721 is 12701180492707.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 70729408110721 - 2⁷ = 70729408110593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70729408110731) 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, 96361591065 + ... + 96361591798.

It is an arithmetic number, because the mean of its divisors is an integer number (17730532823488).

Almost surely, 2^{70729408110721} is an apocalyptic number.

It is an amenable number.

70729408110721 is a deficient number, since it is larger than the sum of its proper divisors (192723183231).

70729408110721 is a wasteful number, since it uses less digits than its factorization.

70729408110721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192723183230.

The product of its (nonzero) digits is 395136, while the sum is 49.

The spelling of 70729408110721 in words is "seventy trillion, seven hundred twenty-nine billion, four hundred eight million, one hundred ten thousand, seven hundred twenty-one".