68951253485 has 8 divisors (see below), whose sum is σ = 82750702200. Its totient is φ = 55154870784.

The previous prime is 68951253443. The next prime is 68951253521. The reversal of 68951253485 is 58435215986.

It can be written as a sum of positive squares in 4 ways, for example, as 32643094276 + 36308159209 = 180674^2 + 190547^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 68951253485 - 2⁶ = 68951253421 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68951253485.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 716732 + ... + 807221.

It is an arithmetic number, because the mean of its divisors is an integer number (10343837775).

Almost surely, 2^68951253485 is an apocalyptic number.

It is an amenable number.

68951253485 is a deficient number, since it is larger than the sum of its proper divisors (13799448715).

68951253485 is a wasteful number, since it uses less digits than its factorization.

68951253485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1533007.

The product of its digits is 10368000, while the sum is 56.

The spelling of 68951253485 in words is "sixty-eight billion, nine hundred fifty-one million, two hundred fifty-three thousand, four hundred eighty-five".