70390527257 has 8 divisors (see below), whose sum is σ = 70650052200. Its totient is φ = 70131066880.

The previous prime is 70390527241. The next prime is 70390527281. The reversal of 70390527257 is 75272509307.

It can be written as a sum of positive squares in 4 ways, for example, as 256128016 + 70134399241 = 16004^2 + 264829^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 70390527257 - 2⁴ = 70390527241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70390527217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3826193 + ... + 3844545.

It is an arithmetic number, because the mean of its divisors is an integer number (8831256525).

Almost surely, 2^70390527257 is an apocalyptic number.

It is an amenable number.

70390527257 is a deficient number, since it is larger than the sum of its proper divisors (259524943).

70390527257 is a wasteful number, since it uses less digits than its factorization.

70390527257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32283.

The product of its (nonzero) digits is 926100, while the sum is 47.

The spelling of 70390527257 in words is "seventy billion, three hundred ninety million, five hundred twenty-seven thousand, two hundred fifty-seven".