20415554201 has 16 divisors (see below), whose sum is σ = 24773402880. Its totient is φ = 16423779840.

The previous prime is 20415554179. The next prime is 20415554209. The reversal of 20415554201 is 10245551402.

It is a cyclic number.

It is not a de Polignac number, because 20415554201 - 2³⁴ = 3235685017 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20415554209) 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, 196220 + ... + 281661.

It is an arithmetic number, because the mean of its divisors is an integer number (1548337680).

Almost surely, 2^20415554201 is an apocalyptic number.

It is an amenable number.

20415554201 is a deficient number, since it is larger than the sum of its proper divisors (4357848679).

20415554201 is a wasteful number, since it uses less digits than its factorization.

20415554201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478264.

The product of its (nonzero) digits is 8000, while the sum is 29.

The spelling of 20415554201 in words is "twenty billion, four hundred fifteen million, five hundred fifty-four thousand, two hundred one".