1245767342457 has 32 divisors (see below), whose sum is σ = 1813706421120. Its totient is φ = 754310430720.

The previous prime is 1245767342363. The next prime is 1245767342467. The reversal of 1245767342457 is 7542437675421.

It is not a de Polignac number, because 1245767342457 - 2²³ = 1245758953849 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1245767342397 and 1245767342406.

It is not an unprimeable number, because it can be changed into a prime (1245767342467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 258616513 + ... + 258621329.

It is an arithmetic number, because the mean of its divisors is an integer number (56678325660).

Almost surely, 2^{1245767342457} is an apocalyptic number.

It is an amenable number.

1245767342457 is a deficient number, since it is larger than the sum of its proper divisors (567939078663).

1245767342457 is a wasteful number, since it uses less digits than its factorization.

1245767342457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10473.

The product of its digits is 39513600, while the sum is 57.

The spelling of 1245767342457 in words is "one trillion, two hundred forty-five billion, seven hundred sixty-seven million, three hundred forty-two thousand, four hundred fifty-seven".