1351431748485 has 216 divisors, whose sum is σ = 3124244302920. Its totient is φ = 536726421504.

The previous prime is 1351431748481. The next prime is 1351431748487. The reversal of 1351431748485 is 5848471341531.

1351431748485 is a `hidden beast` number, since 1 + 3 + 5 + 143 + 17 + 4 + 8 + 485 = 666.

It can be written as a sum of positive squares in 12 ways, for example, as 334817305956 + 1016614442529 = 578634^2 + 1008273^2 .

It is not a de Polignac number, because 1351431748485 - 2² = 1351431748481 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1351431748481) by changing a digit.

It is a polite number, since it can be written in 215 ways as a sum of consecutive naturals, for example, 6228301 + ... + 6441629.

It is an arithmetic number, because the mean of its divisors is an integer number (14464093995).

Almost surely, 2^{1351431748485} is an apocalyptic number.

1351431748485 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1351431748485 is an abundant number, since it is smaller than the sum of its proper divisors (1772812554435).

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

1351431748485 is a wasteful number, since it uses less digits than its factorization.

1351431748485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213397 (or 213374 counting only the distinct ones).

The product of its digits is 6451200, while the sum is 54.

The spelling of 1351431748485 in words is "one trillion, three hundred fifty-one billion, four hundred thirty-one million, seven hundred forty-eight thousand, four hundred eighty-five".