511201000420 has 24 divisors (see below), whose sum is σ = 1171115019648. Its totient is φ = 185891272800.

The previous prime is 511201000399. The next prime is 511201000441. The reversal of 511201000420 is 24000102115.

It is an interprime number because it is at equal distance from previous prime (511201000399) and next prime (511201000441).

It is a super-2 number, since 2×511201000420² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 511201000394 and 511201000403.

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, 1161820236 + ... + 1161820675.

It is an arithmetic number, because the mean of its divisors is an integer number (48796459152).

Almost surely, 2^511201000420 is an apocalyptic number.

It is an amenable number.

511201000420 is an abundant number, since it is smaller than the sum of its proper divisors (659914019228).

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

511201000420 is a wasteful number, since it uses less digits than its factorization.

511201000420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2323640931 (or 2323640929 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 16.

Adding to 511201000420 its reverse (24000102115), we get a palindrome (535201102535).

The spelling of 511201000420 in words is "five hundred eleven billion, two hundred one million, four hundred twenty", and thus it is an aban number.