70243205513172 has 48 divisors (see below), whose sum is σ = 168551588318400. Its totient is φ = 22758923418880.

The previous prime is 70243205513147. The next prime is 70243205513207. The reversal of 70243205513172 is 27131550234207.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 557316579 + ... + 557442602.

It is an arithmetic number, because the mean of its divisors is an integer number (3511491423300).

Almost surely, 2^{70243205513172} is an apocalyptic number.

It is an amenable number.

70243205513172 is an abundant number, since it is smaller than the sum of its proper divisors (98308382805228).

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

70243205513172 is a wasteful number, since it uses less digits than its factorization.

70243205513172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1114759336 (or 1114759334 counting only the distinct ones).

The product of its (nonzero) digits is 352800, while the sum is 42.

Adding to 70243205513172 its reverse (27131550234207), we get a palindrome (97374755747379).

The spelling of 70243205513172 in words is "seventy trillion, two hundred forty-three billion, two hundred five million, five hundred thirteen thousand, one hundred seventy-two".