55190955693 has 16 divisors (see below), whose sum is σ = 75222987840. Its totient is φ = 35982910464.

The previous prime is 55190955607. The next prime is 55190955709. The reversal of 55190955693 is 39655909155.

It is not a de Polignac number, because 55190955693 - 2¹² = 55190951597 is a prime.

It is a super-2 number, since 2×55190955693² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55190955293) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 773646 + ... + 841967.

It is an arithmetic number, because the mean of its divisors is an integer number (4701436740).

Almost surely, 2^55190955693 is an apocalyptic number.

It is an amenable number.

55190955693 is a deficient number, since it is larger than the sum of its proper divisors (20032032147).

55190955693 is a wasteful number, since it uses less digits than its factorization.

55190955693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1615868.

The product of its (nonzero) digits is 8201250, while the sum is 57.

The spelling of 55190955693 in words is "fifty-five billion, one hundred ninety million, nine hundred fifty-five thousand, six hundred ninety-three".