70155728831 has 2 divisors, whose sum is σ = 70155728832. Its totient is φ = 70155728830.

The previous prime is 70155728777. The next prime is 70155728873. The reversal of 70155728831 is 13882755107.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 70155728831 - 2¹⁸ = 70155466687 is a prime.

It is a super-2 number, since 2×70155728831² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70355728831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35077864415 + 35077864416.

It is an arithmetic number, because the mean of its divisors is an integer number (35077864416).

Almost surely, 2^70155728831 is an apocalyptic number.

70155728831 is a deficient number, since it is larger than the sum of its proper divisors (1).

70155728831 is an equidigital number, since it uses as much as digits as its factorization.

70155728831 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 470400, while the sum is 47.

The spelling of 70155728831 in words is "seventy billion, one hundred fifty-five million, seven hundred twenty-eight thousand, eight hundred thirty-one".