55319039999 has 8 divisors (see below), whose sum is σ = 58235520000. Its totient is φ = 52403055192.

The previous prime is 55319039953. The next prime is 55319040013. The reversal of 55319039999 is 99993091355.

It is a Cunningham number, because it is equal to 235200²-1.

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 55319039999 - 2¹² = 55319035903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55319035999) 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, 117602 + ... + 352800.

It is an arithmetic number, because the mean of its divisors is an integer number (7279440000).

Almost surely, 2^55319039999 is an apocalyptic number.

55319039999 is a deficient number, since it is larger than the sum of its proper divisors (2916480001).

55319039999 is a wasteful number, since it uses less digits than its factorization.

55319039999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247597.

The product of its (nonzero) digits is 13286025, while the sum is 62.

The spelling of 55319039999 in words is "fifty-five billion, three hundred nineteen million, thirty-nine thousand, nine hundred ninety-nine".