551502163212 has 288 divisors, whose sum is σ = 1762139361024. Its totient is φ = 131964940800.

The previous prime is 551502163181. The next prime is 551502163231. The reversal of 551502163212 is 212361205155.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 43969662 + ... + 43982202.

It is an arithmetic number, because the mean of its divisors is an integer number (6118539448).

Almost surely, 2^551502163212 is an apocalyptic number.

551502163212 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 551502163212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (881069680512).

551502163212 is an abundant number, since it is smaller than the sum of its proper divisors (1210637197812).

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

551502163212 is a wasteful number, since it uses less digits than its factorization.

551502163212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13109 (or 13100 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 33.

Adding to 551502163212 its reverse (212361205155), we get a palindrome (763863368367).

The spelling of 551502163212 in words is "five hundred fifty-one billion, five hundred two million, one hundred sixty-three thousand, two hundred twelve".