20510462401 has 16 divisors (see below), whose sum is σ = 24124403520. Its totient is φ = 17191437120.

The previous prime is 20510462393. The next prime is 20510462411. The reversal of 20510462401 is 10426401502.

It is a happy number.

It is not a de Polignac number, because 20510462401 - 2³ = 20510462393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20510462411) 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, 39351 + ... + 206323.

It is an arithmetic number, because the mean of its divisors is an integer number (1507775220).

Almost surely, 2^20510462401 is an apocalyptic number.

It is an amenable number.

20510462401 is a deficient number, since it is larger than the sum of its proper divisors (3613941119).

20510462401 is a wasteful number, since it uses less digits than its factorization.

20510462401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167856.

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

Adding to 20510462401 its reverse (10426401502), we get a palindrome (30936863903).

The spelling of 20510462401 in words is "twenty billion, five hundred ten million, four hundred sixty-two thousand, four hundred one".