1351705426256 has 40 divisors (see below), whose sum is σ = 2689863656904. Its totient is φ = 657549135360.

The previous prime is 1351705426241. The next prime is 1351705426261. The reversal of 1351705426256 is 6526245071531.

It can be written as a sum of positive squares in 4 ways, for example, as 686312833600 + 665392592656 = 828440^2 + 815716^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1351705426256.

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, 12413906 + ... + 12522318.

Almost surely, 2^{1351705426256} is an apocalyptic number.

1351705426256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1351705426256 is a deficient number, since it is larger than the sum of its proper divisors (1338158230648).

1351705426256 is a wasteful number, since it uses less digits than its factorization.

1351705426256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129519 (or 129513 counting only the distinct ones).

The product of its (nonzero) digits is 1512000, while the sum is 47.

The spelling of 1351705426256 in words is "one trillion, three hundred fifty-one billion, seven hundred five million, four hundred twenty-six thousand, two hundred fifty-six".