1245313311550 has 72 divisors (see below), whose sum is σ = 2909710672848. Its totient is φ = 388149590400.

The previous prime is 1245313311509. The next prime is 1245313311559. The reversal of 1245313311550 is 551133135421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1245313311559) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 14660287 + ... + 14744986.

It is an arithmetic number, because the mean of its divisors is an integer number (40412648234).

Almost surely, 2^{1245313311550} is an apocalyptic number.

1245313311550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1245313311550 is an abundant number, since it is smaller than the sum of its proper divisors (1664397361298).

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

1245313311550 is a wasteful number, since it uses less digits than its factorization.

1245313311550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29405314 (or 29405298 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 34.

Adding to 1245313311550 its reverse (551133135421), we get a palindrome (1796446446971).

The spelling of 1245313311550 in words is "one trillion, two hundred forty-five billion, three hundred thirteen million, three hundred eleven thousand, five hundred fifty".