551860981740 has 120 divisors (see below), whose sum is σ = 1759589118672. Its totient is φ = 144750395520.

The previous prime is 551860981723. The next prime is 551860981741. The reversal of 551860981740 is 47189068155.

It is a happy number.

551860981740 is a `hidden beast` number, since 5 + 5 + 18 + 609 + 8 + 17 + 4 + 0 = 666.

It is a super-2 number, since 2×551860981740² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (551860981741) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2693434 + ... + 2891073.

Almost surely, 2^551860981740 is an apocalyptic number.

It is an amenable number.

551860981740 is an abundant number, since it is smaller than the sum of its proper divisors (1207728136932).

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

551860981740 is a wasteful number, since it uses less digits than its factorization.

551860981740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5584589 (or 5584578 counting only the distinct ones).

The product of its (nonzero) digits is 2419200, while the sum is 54.

The spelling of 551860981740 in words is "five hundred fifty-one billion, eight hundred sixty million, nine hundred eighty-one thousand, seven hundred forty".