70421752723 has 12 divisors (see below), whose sum is σ = 82098462072. Its totient is φ = 60229401120.

The previous prime is 70421752651. The next prime is 70421752769. The reversal of 70421752723 is 32725712407.

It is a de Polignac number, because none of the positive numbers 2^k-70421752723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70421752823) 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 11 ways as a sum of consecutive naturals, for example, 1550013 + ... + 1594798.

It is an arithmetic number, because the mean of its divisors is an integer number (6841538506).

Almost surely, 2^70421752723 is an apocalyptic number.

70421752723 is a deficient number, since it is larger than the sum of its proper divisors (11676709349).

70421752723 is a wasteful number, since it uses less digits than its factorization.

70421752723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3145282 (or 3145275 counting only the distinct ones).

The product of its (nonzero) digits is 164640, while the sum is 40.

The spelling of 70421752723 in words is "seventy billion, four hundred twenty-one million, seven hundred fifty-two thousand, seven hundred twenty-three".