68946185953 has 4 divisors (see below), whose sum is σ = 69472492848. Its totient is φ = 68419879060.

The previous prime is 68946185933. The next prime is 68946185963. The reversal of 68946185953 is 35958164986.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 68946185953 - 2¹³ = 68946177761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68946185933) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 263153251 + ... + 263153512.

It is an arithmetic number, because the mean of its divisors is an integer number (17368123212).

Almost surely, 2^68946185953 is an apocalyptic number.

It is an amenable number.

68946185953 is a deficient number, since it is larger than the sum of its proper divisors (526306895).

68946185953 is a wasteful number, since it uses less digits than its factorization.

68946185953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526306894.

The product of its digits is 55987200, while the sum is 64.

The spelling of 68946185953 in words is "sixty-eight billion, nine hundred forty-six million, one hundred eighty-five thousand, nine hundred fifty-three".