70905664782 has 48 divisors (see below), whose sum is σ = 154633179168. Its totient is φ = 23480930880.

The previous prime is 70905664771. The next prime is 70905664783. The reversal of 70905664782 is 28746650907.

70905664782 is a `hidden beast` number, since 7 + 0 + 9 + 0 + 566 + 4 + 78 + 2 = 666.

It is a super-2 number, since 2×70905664782² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70905664783) 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, 4516807 + ... + 4532477.

It is an arithmetic number, because the mean of its divisors is an integer number (3221524566).

Almost surely, 2^70905664782 is an apocalyptic number.

70905664782 is an abundant number, since it is smaller than the sum of its proper divisors (83727514386).

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

70905664782 is a wasteful number, since it uses less digits than its factorization.

70905664782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17305 (or 17302 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 54.

The spelling of 70905664782 in words is "seventy billion, nine hundred five million, six hundred sixty-four thousand, seven hundred eighty-two".