70436720143 has 32 divisors (see below), whose sum is σ = 80870961600. Its totient is φ = 60922036224.

The previous prime is 70436720141. The next prime is 70436720147. The reversal of 70436720143 is 34102763407.

It is a cyclic number.

It is not a de Polignac number, because 70436720143 - 2¹ = 70436720141 is a prime.

It is a super-2 number, since 2×70436720143² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70436720141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4018743 + ... + 4036231.

It is an arithmetic number, because the mean of its divisors is an integer number (2527217550).

Almost surely, 2^70436720143 is an apocalyptic number.

70436720143 is a deficient number, since it is larger than the sum of its proper divisors (10434241457).

70436720143 is a wasteful number, since it uses less digits than its factorization.

70436720143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17899.

The product of its (nonzero) digits is 84672, while the sum is 37.

The spelling of 70436720143 in words is "seventy billion, four hundred thirty-six million, seven hundred twenty thousand, one hundred forty-three".