2051240140312 has 16 divisors (see below), whose sum is σ = 4195718469000. Its totient is φ = 932381881920.

The previous prime is 2051240140297. The next prime is 2051240140319. The reversal of 2051240140312 is 2130410421502.

It is a super-2 number, since 2×2051240140312² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2051240140319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11654773437 + ... + 11654773612.

Almost surely, 2^{2051240140312} is an apocalyptic number.

2051240140312 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2051240140312 is an abundant number, since it is smaller than the sum of its proper divisors (2144478328688).

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

2051240140312 is a wasteful number, since it uses less digits than its factorization.

2051240140312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23309547066 (or 23309547062 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 2051240140312 its reverse (2130410421502), we get a palindrome (4181650561814).

The spelling of 2051240140312 in words is "two trillion, fifty-one billion, two hundred forty million, one hundred forty thousand, three hundred twelve".