133630100621655 has 128 divisors (see below), whose sum is σ = 255524535705600. Its totient is φ = 58866537676800.

The previous prime is 133630100621627. The next prime is 133630100621687. The reversal of 133630100621655 is 556126001036331.

It is a happy number.

It is not a de Polignac number, because 133630100621655 - 2¹⁰ = 133630100620631 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 495174810 + ... + 495444600.

It is an arithmetic number, because the mean of its divisors is an integer number (1996285435200).

Almost surely, 2^{133630100621655} is an apocalyptic number.

133630100621655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

133630100621655 is a deficient number, since it is larger than the sum of its proper divisors (121894435083945).

133630100621655 is a wasteful number, since it uses less digits than its factorization.

133630100621655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275945.

The product of its (nonzero) digits is 291600, while the sum is 42.

Adding to 133630100621655 its reverse (556126001036331), we get a palindrome (689756101657986).

The spelling of 133630100621655 in words is "one hundred thirty-three trillion, six hundred thirty billion, one hundred million, six hundred twenty-one thousand, six hundred fifty-five".