70249291877 has 2 divisors, whose sum is σ = 70249291878. Its totient is φ = 70249291876.

The previous prime is 70249291873. The next prime is 70249291927. The reversal of 70249291877 is 77819294207.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70161944161 + 87347716 = 264881^2 + 9346^2 .

It is a cyclic number.

It is not a de Polignac number, because 70249291877 - 2² = 70249291873 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70249291873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35124645938 + 35124645939.

It is an arithmetic number, because the mean of its divisors is an integer number (35124645939).

Almost surely, 2^70249291877 is an apocalyptic number.

It is an amenable number.

70249291877 is a deficient number, since it is larger than the sum of its proper divisors (1).

70249291877 is an equidigital number, since it uses as much as digits as its factorization.

70249291877 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3556224, while the sum is 56.

The spelling of 70249291877 in words is "seventy billion, two hundred forty-nine million, two hundred ninety-one thousand, eight hundred seventy-seven".