551285701680 has 160 divisors (see below), whose sum is σ = 1955285282304. Its totient is φ = 125868883968.

The previous prime is 551285701657. The next prime is 551285701691. The reversal of 551285701680 is 86107582155.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1342864 + ... + 1704656.

Almost surely, 2^551285701680 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 551285701680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (977642641152).

551285701680 is an abundant number, since it is smaller than the sum of its proper divisors (1403999580624).

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

551285701680 is a wasteful number, since it uses less digits than its factorization.

551285701680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362723 (or 362717 counting only the distinct ones).

The product of its (nonzero) digits is 672000, while the sum is 48.

It can be divided in two parts, 55128570 and 1680, that added together give a triangular number (55130250 = T₁₀₅₀₀).

The spelling of 551285701680 in words is "five hundred fifty-one billion, two hundred eighty-five million, seven hundred one thousand, six hundred eighty".