551720055612 has 48 divisors (see below), whose sum is σ = 1405071158400. Its totient is φ = 167105415360.

The previous prime is 551720055583. The next prime is 551720055617. The reversal of 551720055612 is 216550027155.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551720055617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 762162 + ... + 1297817.

It is an arithmetic number, because the mean of its divisors is an integer number (29272315800).

Almost surely, 2^551720055612 is an apocalyptic number.

It is an amenable number.

551720055612 is an abundant number, since it is smaller than the sum of its proper divisors (853351102788).

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

551720055612 is a wasteful number, since it uses less digits than its factorization.

551720055612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2062026 (or 2062024 counting only the distinct ones).

The product of its (nonzero) digits is 105000, while the sum is 39.

The spelling of 551720055612 in words is "five hundred fifty-one billion, seven hundred twenty million, fifty-five thousand, six hundred twelve".