1245719518485 has 64 divisors (see below), whose sum is σ = 2317029926400. Its totient is φ = 566384974848.

The previous prime is 1245719518457. The next prime is 1245719518489. The reversal of 1245719518485 is 5848159175421.

It is not a de Polignac number, because 1245719518485 - 2⁷ = 1245719518357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1245719518489) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4658770 + ... + 4918899.

It is an arithmetic number, because the mean of its divisors is an integer number (36203592600).

Almost surely, 2^{1245719518485} is an apocalyptic number.

1245719518485 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1245719518485 is a deficient number, since it is larger than the sum of its proper divisors (1071310407915).

1245719518485 is a wasteful number, since it uses less digits than its factorization.

1245719518485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9577742.

The product of its digits is 16128000, while the sum is 60.

The spelling of 1245719518485 in words is "one trillion, two hundred forty-five billion, seven hundred nineteen million, five hundred eighteen thousand, four hundred eighty-five".