55004640540487 has 8 divisors (see below), whose sum is σ = 60005144987280. Its totient is φ = 50004149856960.

The previous prime is 55004640540469. The next prime is 55004640540547. The reversal of 55004640540487 is 78404504640055.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55004640540487 is a prime.

It is a super-2 number, since 2×55004640540487² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55004640540407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6054843 + ... + 12110755.

It is an arithmetic number, because the mean of its divisors is an integer number (7500643123410).

Almost surely, 2^{55004640540487} is an apocalyptic number.

55004640540487 is a deficient number, since it is larger than the sum of its proper divisors (5000504446793).

55004640540487 is a wasteful number, since it uses less digits than its factorization.

55004640540487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6881633.

The product of its (nonzero) digits is 10752000, while the sum is 52.

The spelling of 55004640540487 in words is "fifty-five trillion, four billion, six hundred forty million, five hundred forty thousand, four hundred eighty-seven".