55087148667 has 4 divisors (see below), whose sum is σ = 73449531560. Its totient is φ = 36724765776.

The previous prime is 55087148663. The next prime is 55087148731. The reversal of 55087148667 is 76684178055.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 55087148667 - 2² = 55087148663 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55087148663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9181191442 + ... + 9181191447.

It is an arithmetic number, because the mean of its divisors is an integer number (18362382890).

Almost surely, 2^55087148667 is an apocalyptic number.

55087148667 is a deficient number, since it is larger than the sum of its proper divisors (18362382893).

55087148667 is a wasteful number, since it uses less digits than its factorization.

55087148667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18362382892.

The product of its (nonzero) digits is 11289600, while the sum is 57.

The spelling of 55087148667 in words is "fifty-five billion, eighty-seven million, one hundred forty-eight thousand, six hundred sixty-seven".