55651001649 has 8 divisors (see below), whose sum is σ = 74217071712. Its totient is φ = 37092799680.

The previous prime is 55651001573. The next prime is 55651001671. The reversal of 55651001649 is 94610015655.

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

It is not a de Polignac number, because 55651001649 - 2⁹ = 55651001137 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 55651001649.

It is not an unprimeable number, because it can be changed into a prime (55651000649) 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 7 ways as a sum of consecutive naturals, for example, 1950499 + ... + 1978824.

It is an arithmetic number, because the mean of its divisors is an integer number (9277133964).

Almost surely, 2^55651001649 is an apocalyptic number.

It is an amenable number.

55651001649 is a deficient number, since it is larger than the sum of its proper divisors (18566070063).

55651001649 is a wasteful number, since it uses less digits than its factorization.

55651001649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3934047.

The product of its (nonzero) digits is 162000, while the sum is 42.

The spelling of 55651001649 in words is "fifty-five billion, six hundred fifty-one million, one thousand, six hundred forty-nine".