511020001422 has 48 divisors (see below), whose sum is σ = 1265634564480. Its totient is φ = 145976672016.

The previous prime is 511020001409. The next prime is 511020001423. The reversal of 511020001422 is 224100020115.

It is a super-2 number, since 2×511020001422² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 511020001395 and 511020001404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (511020001423) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 236593 + ... + 1038275.

It is an arithmetic number, because the mean of its divisors is an integer number (26367386760).

Almost surely, 2^511020001422 is an apocalyptic number.

511020001422 is an abundant number, since it is smaller than the sum of its proper divisors (754614563058).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

511020001422 is a wasteful number, since it uses less digits than its factorization.

511020001422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 806757 (or 806754 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

Adding to 511020001422 its reverse (224100020115), we get a palindrome (735120021537).

The spelling of 511020001422 in words is "five hundred eleven billion, twenty million, one thousand, four hundred twenty-two".