1245463773540 has 48 divisors (see below), whose sum is σ = 3985484076672. Its totient is φ = 284677433856.

The previous prime is 1245463773503. The next prime is 1245463773601. The reversal of 1245463773540 is 453773645421.

It is a super-2 number, since 2×1245463773540² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1482694549 + ... + 1482695388.

It is an arithmetic number, because the mean of its divisors is an integer number (83030918264).

Almost surely, 2^{1245463773540} is an apocalyptic number.

1245463773540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1245463773540 is an abundant number, since it is smaller than the sum of its proper divisors (2740020303132).

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

1245463773540 is a wasteful number, since it uses less digits than its factorization.

1245463773540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2965389956 (or 2965389954 counting only the distinct ones).

The product of its (nonzero) digits is 8467200, while the sum is 51.

The spelling of 1245463773540 in words is "one trillion, two hundred forty-five billion, four hundred sixty-three million, seven hundred seventy-three thousand, five hundred forty".