55506649471 has 16 divisors (see below), whose sum is σ = 69473779200. Its totient is φ = 43172983008.

The previous prime is 55506649439. The next prime is 55506649477. The reversal of 55506649471 is 17494660555.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 55506649471 - 2⁵ = 55506649439 is a prime.

It is a super-3 number, since 3×55506649471³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55506649477) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5163811 + ... + 5174548.

It is an arithmetic number, because the mean of its divisors is an integer number (4342111200).

Almost surely, 2^55506649471 is an apocalyptic number.

55506649471 is a deficient number, since it is larger than the sum of its proper divisors (13967129729).

55506649471 is a wasteful number, since it uses less digits than its factorization.

55506649471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10338438.

The product of its (nonzero) digits is 4536000, while the sum is 52.

The spelling of 55506649471 in words is "fifty-five billion, five hundred six million, six hundred forty-nine thousand, four hundred seventy-one".