1351642520312 has 128 divisors (see below), whose sum is σ = 3033737625600. Its totient is φ = 552494936448.

The previous prime is 1351642520303. The next prime is 1351642520341. The reversal of 1351642520312 is 2130252461531.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 50123489 + ... + 50150447.

It is an arithmetic number, because the mean of its divisors is an integer number (23701075200).

Almost surely, 2^{1351642520312} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1351642520312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1516868812800).

1351642520312 is an abundant number, since it is smaller than the sum of its proper divisors (1682095105288).

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

1351642520312 is a wasteful number, since it uses less digits than its factorization.

1351642520312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27505 (or 27501 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 35.

Adding to 1351642520312 its reverse (2130252461531), we get a palindrome (3481894981843).

The spelling of 1351642520312 in words is "one trillion, three hundred fifty-one billion, six hundred forty-two million, five hundred twenty thousand, three hundred twelve".