70121952149 has 2 divisors, whose sum is σ = 70121952150. Its totient is φ = 70121952148.

The previous prime is 70121952097. The next prime is 70121952157. The reversal of 70121952149 is 94125912107.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48319953124 + 21801999025 = 219818^2 + 147655^2 .

It is a cyclic number.

It is not a de Polignac number, because 70121952149 - 2¹² = 70121948053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70121952169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35060976074 + 35060976075.

It is an arithmetic number, because the mean of its divisors is an integer number (35060976075).

Almost surely, 2^70121952149 is an apocalyptic number.

It is an amenable number.

70121952149 is a deficient number, since it is larger than the sum of its proper divisors (1).

70121952149 is an equidigital number, since it uses as much as digits as its factorization.

70121952149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45360, while the sum is 41.

The spelling of 70121952149 in words is "seventy billion, one hundred twenty-one million, nine hundred fifty-two thousand, one hundred forty-nine".