70117537428 has 18 divisors (see below), whose sum is σ = 177241553034. Its totient is φ = 23372512464.

The previous prime is 70117537367. The next prime is 70117537439. The reversal of 70117537428 is 82473571107.

70117537428 is a `hidden beast` number, since 70 + 1 + 1 + 7 + 537 + 42 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 66322731024 + 3794806404 = 257532^2 + 61602^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 973854651 + ... + 973854722.

Almost surely, 2^70117537428 is an apocalyptic number.

It is an amenable number.

70117537428 is an abundant number, since it is smaller than the sum of its proper divisors (107124015606).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

70117537428 is a wasteful number, since it uses less digits than its factorization.

70117537428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1947709383 (or 1947709378 counting only the distinct ones).

The product of its (nonzero) digits is 329280, while the sum is 45.

The spelling of 70117537428 in words is "seventy billion, one hundred seventeen million, five hundred thirty-seven thousand, four hundred twenty-eight".