70213315257 has 24 divisors (see below), whose sum is σ = 101792296320. Its totient is φ = 46636836480.

The previous prime is 70213315247. The next prime is 70213315309. The reversal of 70213315257 is 75251331207.

It is a happy number.

70213315257 is a `hidden beast` number, since 70 + 2 + 1 + 331 + 5 + 257 = 666.

It is not a de Polignac number, because 70213315257 - 2⁴ = 70213315241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (70213315247) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8076369 + ... + 8085057.

It is an arithmetic number, because the mean of its divisors is an integer number (4241345680).

Almost surely, 2^70213315257 is an apocalyptic number.

It is an amenable number.

70213315257 is a deficient number, since it is larger than the sum of its proper divisors (31578981063).

70213315257 is a wasteful number, since it uses less digits than its factorization.

70213315257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11893 (or 11890 counting only the distinct ones).

The product of its (nonzero) digits is 44100, while the sum is 36.

The spelling of 70213315257 in words is "seventy billion, two hundred thirteen million, three hundred fifteen thousand, two hundred fifty-seven".