70487942517 has 6 divisors (see below), whose sum is σ = 101815916982. Its totient is φ = 46991961672.

The previous prime is 70487942491. The next prime is 70487942579. The reversal of 70487942517 is 71524978407.

70487942517 is a `hidden beast` number, since 7 + 0 + 4 + 87 + 9 + 42 + 517 = 666.

It can be written as a sum of positive squares in only one way, i.e., 37329717681 + 33158224836 = 193209^2 + 182094^2 .

It is not a de Polignac number, because 70487942517 - 2¹⁶ = 70487876981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70487942587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3915996798 + ... + 3915996815.

It is an arithmetic number, because the mean of its divisors is an integer number (16969319497).

Almost surely, 2^70487942517 is an apocalyptic number.

It is an amenable number.

70487942517 is a deficient number, since it is larger than the sum of its proper divisors (31327974465).

70487942517 is a wasteful number, since it uses less digits than its factorization.

70487942517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7831993619 (or 7831993616 counting only the distinct ones).

The product of its (nonzero) digits is 3951360, while the sum is 54.

The spelling of 70487942517 in words is "seventy billion, four hundred eighty-seven million, nine hundred forty-two thousand, five hundred seventeen".