20355513662 has 16 divisors (see below), whose sum is σ = 33313901184. Its totient is φ = 9251151000.

The previous prime is 20355513623. The next prime is 20355513667. The reversal of 20355513662 is 26631555302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20355513667) 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, 94487 + ... + 222797.

It is an arithmetic number, because the mean of its divisors is an integer number (2082118824).

Almost surely, 2^20355513662 is an apocalyptic number.

20355513662 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20355513662 is a deficient number, since it is larger than the sum of its proper divisors (12958387522).

20355513662 is a wasteful number, since it uses less digits than its factorization.

20355513662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135535.

The product of its (nonzero) digits is 162000, while the sum is 38.

The spelling of 20355513662 in words is "twenty billion, three hundred fifty-five million, five hundred thirteen thousand, six hundred sixty-two".