55657533381208 has 32 divisors (see below), whose sum is σ = 113845241034000. Its totient is φ = 25298815167360.

The previous prime is 55657533381133. The next prime is 55657533381283. The reversal of 55657533381208 is 80218333575655.

It is an interprime number because it is at equal distance from previous prime (55657533381133) and next prime (55657533381283).

It is a super-2 number, since 2×55657533381208² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67851178 + ... + 68666566.

Almost surely, 2^{55657533381208} is an apocalyptic number.

It is an amenable number.

55657533381208 is an abundant number, since it is smaller than the sum of its proper divisors (58187707652792).

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

55657533381208 is a wasteful number, since it uses less digits than its factorization.

55657533381208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1591075 (or 1591071 counting only the distinct ones).

The product of its (nonzero) digits is 90720000, while the sum is 61.

The spelling of 55657533381208 in words is "fifty-five trillion, six hundred fifty-seven billion, five hundred thirty-three million, three hundred eighty-one thousand, two hundred eight".