55147337661 has 8 divisors (see below), whose sum is σ = 79185920800. Its totient is φ = 33936823152.

The previous prime is 55147337647. The next prime is 55147337753. The reversal of 55147337661 is 16673374155.

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

It is not a de Polignac number, because 55147337661 - 2⁹ = 55147337149 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55147337661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55147337611) 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, 707017111 + ... + 707017188.

It is an arithmetic number, because the mean of its divisors is an integer number (9898240100).

Almost surely, 2^55147337661 is an apocalyptic number.

It is an amenable number.

55147337661 is a deficient number, since it is larger than the sum of its proper divisors (24038583139).

55147337661 is a wasteful number, since it uses less digits than its factorization.

55147337661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1414034315.

The product of its digits is 1587600, while the sum is 48.

The spelling of 55147337661 in words is "fifty-five billion, one hundred forty-seven million, three hundred thirty-seven thousand, six hundred sixty-one".