551391460000 has 60 divisors (see below), whose sum is σ = 1356505749522. Its totient is φ = 220556576000.

The previous prime is 551391459991. The next prime is 551391460001. The reversal of 551391460000 is 64193155.

It can be written as a sum of positive squares in 5 ways, for example, as 26525985424 + 524865474576 = 162868^2 + 724476^2 .

It is not an unprimeable number, because it can be changed into a prime (551391460001) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 13764787 + ... + 13804786.

Almost surely, 2^551391460000 is an apocalyptic number.

551391460000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

551391460000 is an abundant number, since it is smaller than the sum of its proper divisors (805114289522).

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

551391460000 is an equidigital number, since it uses as much as digits as its factorization.

551391460000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27569603 (or 27569580 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 34.

The spelling of 551391460000 in words is "five hundred fifty-one billion, three hundred ninety-one million, four hundred sixty thousand".