20010231455 has 8 divisors (see below), whose sum is σ = 24020140704. Its totient is φ = 16002943200.

The previous prime is 20010231443. The next prime is 20010231491. The reversal of 20010231455 is 55413201002.

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

It is not a de Polignac number, because 20010231455 - 2¹⁰ = 20010230431 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20010231455.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 638411 + ... + 669020.

It is an arithmetic number, because the mean of its divisors is an integer number (3002517588).

Almost surely, 2^20010231455 is an apocalyptic number.

20010231455 is a deficient number, since it is larger than the sum of its proper divisors (4009909249).

20010231455 is a wasteful number, since it uses less digits than its factorization.

20010231455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1310497.

The product of its (nonzero) digits is 1200, while the sum is 23.

Adding to 20010231455 its reverse (55413201002), we get a palindrome (75423432457).

The spelling of 20010231455 in words is "twenty billion, ten million, two hundred thirty-one thousand, four hundred fifty-five".