511001010100 has 72 divisors (see below), whose sum is σ = 1267966706048. Its totient is φ = 175105756800.

The previous prime is 511001010061. The next prime is 511001010139. The reversal of 511001010100 is 1010100115.

It is an interprime number because it is at equal distance from previous prime (511001010061) and next prime (511001010139).

It is a super-2 number, since 2×511001010100² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1106569 + ... + 1498831.

Almost surely, 2^511001010100 is an apocalyptic number.

511001010100 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

511001010100 is an abundant number, since it is smaller than the sum of its proper divisors (756965695948).

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

511001010100 is a wasteful number, since it uses less digits than its factorization.

511001010100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394145 (or 394138 counting only the distinct ones).

The product of its (nonzero) digits is 5, while the sum is 10.

Adding to 511001010100 its reverse (1010100115), we get a palindrome (512011110215).

The spelling of 511001010100 in words is "five hundred eleven billion, one million, ten thousand, one hundred".