55405020002 has 8 divisors (see below), whose sum is σ = 83115029712. Its totient is φ = 27700010100.

The previous prime is 55405019987. The next prime is 55405020017. The reversal of 55405020002 is 20002050455.

It is an interprime number because it is at equal distance from previous prime (55405019987) and next prime (55405020017).

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

It is a self number, because there is not a number n which added to its sum of digits gives 55405020002.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1222124 + ... + 1266647.

It is an arithmetic number, because the mean of its divisors is an integer number (10389378714).

Almost surely, 2^55405020002 is an apocalyptic number.

55405020002 is a deficient number, since it is larger than the sum of its proper divisors (27710009710).

55405020002 is a wasteful number, since it uses less digits than its factorization.

55405020002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2499904.

The product of its (nonzero) digits is 2000, while the sum is 23.

Adding to 55405020002 its reverse (20002050455), we get a palindrome (75407070457).

The spelling of 55405020002 in words is "fifty-five billion, four hundred five million, twenty thousand, two".