1533656666990 has 16 divisors (see below), whose sum is σ = 3154950857952. Its totient is φ = 525825142944.

The previous prime is 1533656666957. The next prime is 1533656666999. The reversal of 1533656666990 is 996666563351.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1533656666999) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10954690409 + ... + 10954690548.

It is an arithmetic number, because the mean of its divisors is an integer number (197184428622).

Almost surely, 2^{1533656666990} is an apocalyptic number.

1533656666990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1533656666990 is an abundant number, since it is smaller than the sum of its proper divisors (1621294190962).

1533656666990 is a wasteful number, since it uses less digits than its factorization.

1533656666990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21909380971.

The product of its (nonzero) digits is 141717600, while the sum is 65.

The spelling of 1533656666990 in words is "one trillion, five hundred thirty-three billion, six hundred fifty-six million, six hundred sixty-six thousand, nine hundred ninety".