55782249988 has 6 divisors (see below), whose sum is σ = 97618937486. Its totient is φ = 27891124992.

The previous prime is 55782249979. The next prime is 55782249997. The reversal of 55782249988 is 88994228755.

It is an interprime number because it is at equal distance from previous prime (55782249979) and next prime (55782249997).

It can be written as a sum of positive squares in only one way, i.e., 47555397184 + 8226852804 = 218072^2 + 90702^2 .

It is a super-2 number, since 2×55782249988² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6972781245 + ... + 6972781252.

Almost surely, 2^55782249988 is an apocalyptic number.

It is an amenable number.

55782249988 is a deficient number, since it is larger than the sum of its proper divisors (41836687498).

55782249988 is a wasteful number, since it uses less digits than its factorization.

55782249988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13945562501 (or 13945562499 counting only the distinct ones).

The product of its digits is 116121600, while the sum is 67.

The spelling of 55782249988 in words is "fifty-five billion, seven hundred eighty-two million, two hundred forty-nine thousand, nine hundred eighty-eight".