20402332401 has 8 divisors (see below), whose sum is σ = 29676119904. Its totient is φ = 12365049920.

The previous prime is 20402332397. The next prime is 20402332403. The reversal of 20402332401 is 10423320402.

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 20402332401 - 2² = 20402332397 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20402332403) 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, 309126216 + ... + 309126281.

It is an arithmetic number, because the mean of its divisors is an integer number (3709514988).

Almost surely, 2^20402332401 is an apocalyptic number.

It is an amenable number.

20402332401 is a deficient number, since it is larger than the sum of its proper divisors (9273787503).

20402332401 is a wasteful number, since it uses less digits than its factorization.

20402332401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 618252511.

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 20402332401 its reverse (10423320402), we get a palindrome (30825652803).

The spelling of 20402332401 in words is "twenty billion, four hundred two million, three hundred thirty-two thousand, four hundred one".