20751236310140 has 48 divisors (see below), whose sum is σ = 52732553452992. Its totient is φ = 6696197262336.

The previous prime is 20751236310067. The next prime is 20751236310151. The reversal of 20751236310140 is 4101363215702.

It is a super-2 number, since 2×20751236310140² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 20751236310140.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4359501047 + ... + 4359505806.

It is an arithmetic number, because the mean of its divisors is an integer number (1098594863604).

Almost surely, 2^{20751236310140} is an apocalyptic number.

20751236310140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20751236310140 is an abundant number, since it is smaller than the sum of its proper divisors (31981317142852).

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

20751236310140 is a wasteful number, since it uses less digits than its factorization.

20751236310140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8719006886 (or 8719006884 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 35.

Adding to 20751236310140 its reverse (4101363215702), we get a palindrome (24852599525842).

The spelling of 20751236310140 in words is "twenty trillion, seven hundred fifty-one billion, two hundred thirty-six million, three hundred ten thousand, one hundred forty".