55195465649 has 4 divisors (see below), whose sum is σ = 58442257764. Its totient is φ = 51948673536.

The previous prime is 55195465627. The next prime is 55195465673. The reversal of 55195465649 is 94656459155.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 28318158400 + 26877307249 = 168280^2 + 163943^2 .

It is a cyclic number.

It is not a de Polignac number, because 55195465649 - 2⁸ = 55195465393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55195465679) 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, 1623396032 + ... + 1623396065.

It is an arithmetic number, because the mean of its divisors is an integer number (14610564441).

Almost surely, 2^55195465649 is an apocalyptic number.

It is an amenable number.

55195465649 is a deficient number, since it is larger than the sum of its proper divisors (3246792115).

55195465649 is a wasteful number, since it uses less digits than its factorization.

55195465649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3246792114.

The product of its digits is 29160000, while the sum is 59.

The spelling of 55195465649 in words is "fifty-five billion, one hundred ninety-five million, four hundred sixty-five thousand, six hundred forty-nine".