20355111433742 has 8 divisors (see below), whose sum is σ = 30532686598416. Its totient is φ = 10177549234272.

The previous prime is 20355111433729. The next prime is 20355111433823. The reversal of 20355111433742 is 24733411155302.

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

It is a super-2 number, since 2×20355111433742² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20355111433742.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3429143 + ... + 7243565.

It is an arithmetic number, because the mean of its divisors is an integer number (3816585824802).

Almost surely, 2^{20355111433742} is an apocalyptic number.

20355111433742 is a deficient number, since it is larger than the sum of its proper divisors (10177575164674).

20355111433742 is a wasteful number, since it uses less digits than its factorization.

20355111433742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6482602.

The product of its (nonzero) digits is 302400, while the sum is 41.

The spelling of 20355111433742 in words is "twenty trillion, three hundred fifty-five billion, one hundred eleven million, four hundred thirty-three thousand, seven hundred forty-two".