55135217374 has 12 divisors (see below), whose sum is σ = 87284701224. Its totient is φ = 26116681572.

The previous prime is 55135217287. The next prime is 55135217381. The reversal of 55135217374 is 47371253155.

It is a self number, because there is not a number n which added to its sum of digits gives 55135217374.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 38181562 + ... + 38183005.

It is an arithmetic number, because the mean of its divisors is an integer number (7273725102).

Almost surely, 2^55135217374 is an apocalyptic number.

55135217374 is a deficient number, since it is larger than the sum of its proper divisors (32149483850).

55135217374 is a wasteful number, since it uses less digits than its factorization.

55135217374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76364607 (or 76364588 counting only the distinct ones).

The product of its digits is 441000, while the sum is 43.

The spelling of 55135217374 in words is "fifty-five billion, one hundred thirty-five million, two hundred seventeen thousand, three hundred seventy-four".