20120654401 has 8 divisors (see below), whose sum is σ = 20954169000. Its totient is φ = 19296453120.

The previous prime is 20120654387. The next prime is 20120654461. The reversal of 20120654401 is 10445602102.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 959450625 + 19161203776 = 30975^2 + 138424^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20120654401 - 2²³ = 20112265793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20120654461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2323920 + ... + 2332561.

It is an arithmetic number, because the mean of its divisors is an integer number (2619271125).

Almost surely, 2^20120654401 is an apocalyptic number.

It is an amenable number.

20120654401 is a deficient number, since it is larger than the sum of its proper divisors (833514599).

20120654401 is a wasteful number, since it uses less digits than its factorization.

20120654401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4656659.

The product of its (nonzero) digits is 1920, while the sum is 25.

The spelling of 20120654401 in words is "twenty billion, one hundred twenty million, six hundred fifty-four thousand, four hundred one".