20351668350 has 48 divisors (see below), whose sum is σ = 54354614832. Its totient is φ = 5009640960.

The previous prime is 20351668301. The next prime is 20351668369. The reversal of 20351668350 is 5386615302.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a junction number, because it is equal to n+sod(n) for n = 20351668299 and 20351668308.

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 23 ways as a sum of consecutive naturals, for example, 5216427 + ... + 5220326.

It is an arithmetic number, because the mean of its divisors is an integer number (1132387809).

Almost surely, 2^20351668350 is an apocalyptic number.

20351668350 is an abundant number, since it is smaller than the sum of its proper divisors (34002946482).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20351668350 is a wasteful number, since it uses less digits than its factorization.

20351668350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10436781 (or 10436776 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 39.

The spelling of 20351668350 in words is "twenty billion, three hundred fifty-one million, six hundred sixty-eight thousand, three hundred fifty".