23643377455447 has 16 divisors (see below), whose sum is σ = 24456043515904. Its totient is φ = 22833880884000.

The previous prime is 23643377455429. The next prime is 23643377455457. The reversal of 23643377455447 is 74455477334632.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23643377455447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23643377455427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30566593 + ... + 31330549.

It is an arithmetic number, because the mean of its divisors is an integer number (1528502719744).

Almost surely, 2^{23643377455447} is an apocalyptic number.

23643377455447 is a deficient number, since it is larger than the sum of its proper divisors (812666060457).

23643377455447 is a wasteful number, since it uses less digits than its factorization.

23643377455447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 766030.

The product of its digits is 711244800, while the sum is 64.

The spelling of 23643377455447 in words is "twenty-three trillion, six hundred forty-three billion, three hundred seventy-seven million, four hundred fifty-five thousand, four hundred forty-seven".