20146167517647 has 16 divisors (see below), whose sum is σ = 28684198471680. Its totient is φ = 12549336828000.

The previous prime is 20146167517613. The next prime is 20146167517649. The reversal of 20146167517647 is 74671576164102.

It is a happy number.

It is not a de Polignac number, because 20146167517647 - 2⁶ = 20146167517583 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20146167517649) 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, 3734918979 + ... + 3734924372.

It is an arithmetic number, because the mean of its divisors is an integer number (1792762404480).

Almost surely, 2^{20146167517647} is an apocalyptic number.

20146167517647 is a deficient number, since it is larger than the sum of its proper divisors (8538030954033).

20146167517647 is a wasteful number, since it uses less digits than its factorization.

20146167517647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7469843414.

The product of its (nonzero) digits is 11854080, while the sum is 57.

The spelling of 20146167517647 in words is "twenty trillion, one hundred forty-six billion, one hundred sixty-seven million, five hundred seventeen thousand, six hundred forty-seven".