1245330521055 has 48 divisors (see below), whose sum is σ = 2204855976960. Its totient is φ = 649939898304.

The previous prime is 1245330521051. The next prime is 1245330521081. The reversal of 1245330521055 is 5501250335421.

1245330521055 is a `hidden beast` number, since 1 + 2 + 4 + 53 + 30 + 521 + 0 + 55 = 666.

It is not a de Polignac number, because 1245330521055 - 2² = 1245330521051 is a prime.

It is a super-2 number, since 2×1245330521055² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1245330521051) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14039574 + ... + 14127996.

It is an arithmetic number, because the mean of its divisors is an integer number (45934499520).

Almost surely, 2^{1245330521055} is an apocalyptic number.

1245330521055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1245330521055 is a deficient number, since it is larger than the sum of its proper divisors (959525455905).

1245330521055 is a wasteful number, since it uses less digits than its factorization.

1245330521055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95140 (or 95137 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 36.

Adding to 1245330521055 its reverse (5501250335421), we get a palindrome (6746580856476).

The spelling of 1245330521055 in words is "one trillion, two hundred forty-five billion, three hundred thirty million, five hundred twenty-one thousand, fifty-five".