20755151818742 has 16 divisors (see below), whose sum is σ = 33963243239952. Its totient is φ = 9434085601920.

The previous prime is 20755151818603. The next prime is 20755151818777. The reversal of 20755151818742 is 24781815155702.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 808943 + ... + 6493434.

It is an arithmetic number, because the mean of its divisors is an integer number (2122702702497).

Almost surely, 2^{20755151818742} is an apocalyptic number.

20755151818742 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20755151818742 is a deficient number, since it is larger than the sum of its proper divisors (13208091421210).

20755151818742 is a wasteful number, since it uses less digits than its factorization.

20755151818742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7431583.

The product of its (nonzero) digits is 6272000, while the sum is 56.

The spelling of 20755151818742 in words is "twenty trillion, seven hundred fifty-five billion, one hundred fifty-one million, eight hundred eighteen thousand, seven hundred forty-two".