70879477829 has 2 divisors, whose sum is σ = 70879477830. Its totient is φ = 70879477828.

The previous prime is 70879477819. The next prime is 70879477847. The reversal of 70879477829 is 92877497807.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60520920100 + 10358557729 = 246010^2 + 101777^2 .

It is a cyclic number.

It is not a de Polignac number, because 70879477829 - 2⁸ = 70879477573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70879477819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35439738914 + 35439738915.

It is an arithmetic number, because the mean of its divisors is an integer number (35439738915).

Almost surely, 2^70879477829 is an apocalyptic number.

It is an amenable number.

70879477829 is a deficient number, since it is larger than the sum of its proper divisors (1).

70879477829 is an equidigital number, since it uses as much as digits as its factorization.

70879477829 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 99574272, while the sum is 68.

The spelling of 70879477829 in words is "seventy billion, eight hundred seventy-nine million, four hundred seventy-seven thousand, eight hundred twenty-nine".