20350218702 has 16 divisors (see below), whose sum is σ = 44400477312. Its totient is φ = 6166732920.

The previous prime is 20350218659. The next prime is 20350218709. The reversal of 20350218702 is 20781205302.

It is a self number, because there is not a number n which added to its sum of digits gives 20350218702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20350218709) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 154168258 + ... + 154168389.

It is an arithmetic number, because the mean of its divisors is an integer number (2775029832).

Almost surely, 2^20350218702 is an apocalyptic number.

20350218702 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20350218702 is an abundant number, since it is smaller than the sum of its proper divisors (24050258610).

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

20350218702 is a wasteful number, since it uses less digits than its factorization.

20350218702 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308336663.

The product of its (nonzero) digits is 6720, while the sum is 30.

The spelling of 20350218702 in words is "twenty billion, three hundred fifty million, two hundred eighteen thousand, seven hundred two".