55904641919 has 4 divisors (see below), whose sum is σ = 63891019344. Its totient is φ = 47918264496.

The previous prime is 55904641889. The next prime is 55904641931. The reversal of 55904641919 is 91914640955.

55904641919 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91914640955 = 5 ⋅18382928191.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55904641919 is a prime.

It is a super-2 number, since 2×55904641919² (a number of 22 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 (55904641999) 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, 3993188702 + ... + 3993188715.

It is an arithmetic number, because the mean of its divisors is an integer number (15972754836).

Almost surely, 2^55904641919 is an apocalyptic number.

55904641919 is a deficient number, since it is larger than the sum of its proper divisors (7986377425).

55904641919 is an equidigital number, since it uses as much as digits as its factorization.

55904641919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7986377424.

The product of its (nonzero) digits is 1749600, while the sum is 53.

The spelling of 55904641919 in words is "fifty-five billion, nine hundred four million, six hundred forty-one thousand, nine hundred nineteen".