55621001662 has 4 divisors (see below), whose sum is σ = 83431502496. Its totient is φ = 27810500830.

The previous prime is 55621001627. The next prime is 55621001699. The reversal of 55621001662 is 26610012655.

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

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 as a sum of consecutive naturals, namely, 13905250414 + ... + 13905250417.

It is an arithmetic number, because the mean of its divisors is an integer number (20857875624).

Almost surely, 2^55621001662 is an apocalyptic number.

55621001662 is a deficient number, since it is larger than the sum of its proper divisors (27810500834).

55621001662 is a wasteful number, since it uses less digits than its factorization.

55621001662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27810500833.

The product of its (nonzero) digits is 21600, while the sum is 34.

The spelling of 55621001662 in words is "fifty-five billion, six hundred twenty-one million, one thousand, six hundred sixty-two".