20005157623601 has 16 divisors (see below), whose sum is σ = 20894916268800. Its totient is φ = 19135342618560.

The previous prime is 20005157623579. The next prime is 20005157623609. The reversal of 20005157623601 is 10632675150002.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20005157623601 - 2³⁰ = 20004083881777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20005157623609) 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, 9993221 + ... + 11826866.

It is an arithmetic number, because the mean of its divisors is an integer number (1305932266800).

Almost surely, 2^{20005157623601} is an apocalyptic number.

It is an amenable number.

20005157623601 is a deficient number, since it is larger than the sum of its proper divisors (889758645199).

20005157623601 is a wasteful number, since it uses less digits than its factorization.

20005157623601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21820544.

The product of its (nonzero) digits is 75600, while the sum is 38.

The spelling of 20005157623601 in words is "twenty trillion, five billion, one hundred fifty-seven million, six hundred twenty-three thousand, six hundred one".