20466663553137 has 32 divisors (see below), whose sum is σ = 28491482557440. Its totient is φ = 13053276149760.

The previous prime is 20466663553123. The next prime is 20466663553157. The reversal of 20466663553137 is 73135536666402.

It is a happy number.

It is not a de Polignac number, because 20466663553137 - 2⁷ = 20466663553009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20466663553157) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40779673 + ... + 41278505.

It is an arithmetic number, because the mean of its divisors is an integer number (890358829920).

Almost surely, 2^{20466663553137} is an apocalyptic number.

It is an amenable number.

20466663553137 is a deficient number, since it is larger than the sum of its proper divisors (8024819004303).

20466663553137 is a wasteful number, since it uses less digits than its factorization.

20466663553137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503913.

The product of its (nonzero) digits is 48988800, while the sum is 57.

The spelling of 20466663553137 in words is "twenty trillion, four hundred sixty-six billion, six hundred sixty-three million, five hundred fifty-three thousand, one hundred thirty-seven".