20350551055 has 8 divisors (see below), whose sum is σ = 24498684432. Its totient is φ = 16228425408.

The previous prime is 20350551049. The next prime is 20350551061. The reversal of 20350551055 is 55015505302.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20350551049) and next prime (20350551061).

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

It is a cyclic number.

It is not a de Polignac number, because 20350551055 - 2⁹ = 20350550543 is a prime.

It is a super-2 number, since 2×20350551055² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

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 in 7 ways as a sum of consecutive naturals, for example, 6500209 + ... + 6503338.

It is an arithmetic number, because the mean of its divisors is an integer number (3062335554).

Almost surely, 2^20350551055 is an apocalyptic number.

20350551055 is a deficient number, since it is larger than the sum of its proper divisors (4148133377).

20350551055 is a wasteful number, since it uses less digits than its factorization.

20350551055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13003865.

The product of its (nonzero) digits is 18750, while the sum is 31.

The spelling of 20350551055 in words is "twenty billion, three hundred fifty million, five hundred fifty-one thousand, fifty-five".