20135741754542 has 32 divisors (see below), whose sum is σ = 33803151893280. Its totient is φ = 8939676395520.

The previous prime is 20135741754539. The next prime is 20135741754547. The reversal of 20135741754542 is 24545714753102.

It is a super-2 number, since 2×20135741754542² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20135741754547) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64512113 + ... + 64823484.

It is an arithmetic number, because the mean of its divisors is an integer number (1056348496665).

Almost surely, 2^{20135741754542} is an apocalyptic number.

20135741754542 is a deficient number, since it is larger than the sum of its proper divisors (13667410138738).

20135741754542 is a wasteful number, since it uses less digits than its factorization.

20135741754542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129335876.

The product of its (nonzero) digits is 4704000, while the sum is 50.

The spelling of 20135741754542 in words is "twenty trillion, one hundred thirty-five billion, seven hundred forty-one million, seven hundred fifty-four thousand, five hundred forty-two".