70231387654661 has 8 divisors (see below), whose sum is σ = 74363832868824. Its totient is φ = 66099074342400.

The previous prime is 70231387654601. The next prime is 70231387654691. The reversal of 70231387654661 is 16645678313207.

It can be written as a sum of positive squares in 4 ways, for example, as 1411189564225 + 68820198090436 = 1187935^2 + 8295794^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70231387654661 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 70231387654661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70231387654601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31878200 + ... + 34010033.

It is an arithmetic number, because the mean of its divisors is an integer number (9295479108603).

Almost surely, 2^{70231387654661} is an apocalyptic number.

It is an amenable number.

70231387654661 is a deficient number, since it is larger than the sum of its proper divisors (4132445214163).

70231387654661 is a wasteful number, since it uses less digits than its factorization.

70231387654661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65950951.

The product of its (nonzero) digits is 30481920, while the sum is 59.

The spelling of 70231387654661 in words is "seventy trillion, two hundred thirty-one billion, three hundred eighty-seven million, six hundred fifty-four thousand, six hundred sixty-one".