55561100006949 has 4 divisors (see below), whose sum is σ = 74081466675936. Its totient is φ = 37040733337964.

The previous prime is 55561100006857. The next prime is 55561100006957. The reversal of 55561100006949 is 94960000116555.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 55561100006949 - 2²¹ = 55561097909797 is a prime.

It is a super-3 number, since 3×55561100006949³ (a number of 42 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55561100206949) 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, 9260183334489 + ... + 9260183334494.

It is an arithmetic number, because the mean of its divisors is an integer number (18520366668984).

Almost surely, 2^{55561100006949} is an apocalyptic number.

It is an amenable number.

55561100006949 is a deficient number, since it is larger than the sum of its proper divisors (18520366668987).

55561100006949 is a wasteful number, since it uses less digits than its factorization.

55561100006949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18520366668986.

The product of its (nonzero) digits is 1458000, while the sum is 51.

The spelling of 55561100006949 in words is "fifty-five trillion, five hundred sixty-one billion, one hundred million, six thousand, nine hundred forty-nine".