55519330931445 has 8 divisors (see below), whose sum is σ = 88830929490336. Its totient is φ = 29610309830096.

The previous prime is 55519330931431. The next prime is 55519330931483. The reversal of 55519330931445 is 54413903391555.

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

It is a cyclic number.

It is not a de Polignac number, because 55519330931445 - 2⁹ = 55519330930933 is a prime.

It is a super-2 number, since 2×55519330931445² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1850644364367 + ... + 1850644364396.

It is an arithmetic number, because the mean of its divisors is an integer number (11103866186292).

Almost surely, 2^{55519330931445} is an apocalyptic number.

It is an amenable number.

55519330931445 is a deficient number, since it is larger than the sum of its proper divisors (33311598558891).

55519330931445 is a wasteful number, since it uses less digits than its factorization.

55519330931445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3701288728771.

The product of its (nonzero) digits is 21870000, while the sum is 57.

The spelling of 55519330931445 in words is "fifty-five trillion, five hundred nineteen billion, three hundred thirty million, nine hundred thirty-one thousand, four hundred forty-five".