70438857237 has 48 divisors (see below), whose sum is σ = 119061150208. Its totient is φ = 39289289760.

The previous prime is 70438857221. The next prime is 70438857241. The reversal of 70438857237 is 73275883407.

It is a happy number.

70438857237 is a `hidden beast` number, since 7 + 0 + 4 + 38 + 8 + 572 + 37 = 666.

It is not a de Polignac number, because 70438857237 - 2⁴ = 70438857221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70438857257) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4660062 + ... + 4675152.

Almost surely, 2^70438857237 is an apocalyptic number.

It is an amenable number.

70438857237 is a deficient number, since it is larger than the sum of its proper divisors (48622292971).

70438857237 is a wasteful number, since it uses less digits than its factorization.

70438857237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16870 (or 16867 counting only the distinct ones).

The product of its (nonzero) digits is 7902720, while the sum is 54.

The spelling of 70438857237 in words is "seventy billion, four hundred thirty-eight million, eight hundred fifty-seven thousand, two hundred thirty-seven".