555139954782 has 64 divisors (see below), whose sum is σ = 1418321802240. Its totient is φ = 157661628768.

The previous prime is 555139954781. The next prime is 555139954793. The reversal of 555139954782 is 287459931555.

555139954782 is a `hidden beast` number, since 5 + 5 + 5 + 1 + 3 + 9 + 9 + 547 + 82 = 666.

It is a super-2 number, since 2×555139954782² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (555139954781) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4333953 + ... + 4460204.

It is an arithmetic number, because the mean of its divisors is an integer number (22161278160).

Almost surely, 2^555139954782 is an apocalyptic number.

555139954782 is an abundant number, since it is smaller than the sum of its proper divisors (863181847458).

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

555139954782 is a wasteful number, since it uses less digits than its factorization.

555139954782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8794342 (or 8794336 counting only the distinct ones).

The product of its digits is 68040000, while the sum is 63.

The spelling of 555139954782 in words is "five hundred fifty-five billion, one hundred thirty-nine million, nine hundred fifty-four thousand, seven hundred eighty-two".