1213660153530 has 96 divisors (see below), whose sum is σ = 3462280174080. Its totient is φ = 292519904640.

The previous prime is 1213660153441. The next prime is 1213660153577. The reversal of 1213660153530 is 353510663121.

1213660153530 is a `hidden beast` number, since 1 + 2 + 1 + 36 + 60 + 1 + 535 + 30 = 666.

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 47 ways as a sum of consecutive naturals, for example, 3371850 + ... + 3714389.

It is an arithmetic number, because the mean of its divisors is an integer number (36065418480).

Almost surely, 2^{1213660153530} is an apocalyptic number.

1213660153530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1213660153530 is an abundant number, since it is smaller than the sum of its proper divisors (2248620020550).

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

1213660153530 is a wasteful number, since it uses less digits than its factorization.

1213660153530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7086436 (or 7086433 counting only the distinct ones).

The product of its (nonzero) digits is 48600, while the sum is 36.

The spelling of 1213660153530 in words is "one trillion, two hundred thirteen billion, six hundred sixty million, one hundred fifty-three thousand, five hundred thirty".