63946258945 has 4 divisors (see below), whose sum is σ = 76735510740. Its totient is φ = 51157007152.

The previous prime is 63946258939. The next prime is 63946258993. The reversal of 63946258945 is 54985264936.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13713346816 + 50232912129 = 117104^2 + 224127^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63946258945 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6394625890 + ... + 6394625899.

It is an arithmetic number, because the mean of its divisors is an integer number (19183877685).

Almost surely, 2^63946258945 is an apocalyptic number.

It is an amenable number.

63946258945 is a deficient number, since it is larger than the sum of its proper divisors (12789251795).

63946258945 is a wasteful number, since it uses less digits than its factorization.

63946258945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12789251794.

The product of its digits is 55987200, while the sum is 61.

The spelling of 63946258945 in words is "sixty-three billion, nine hundred forty-six million, two hundred fifty-eight thousand, nine hundred forty-five".