133451555655 has 32 divisors (see below), whose sum is σ = 233167546368. Its totient is φ = 64638806400.

The previous prime is 133451555651. The next prime is 133451555659. The reversal of 133451555655 is 556555154331.

It is an interprime number because it is at equal distance from previous prime (133451555651) and next prime (133451555659).

It is not a de Polignac number, because 133451555655 - 2² = 133451555651 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133451555651) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 241111 + ... + 570120.

It is an arithmetic number, because the mean of its divisors is an integer number (7286485824).

Almost surely, 2^133451555655 is an apocalyptic number.

133451555655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

133451555655 is a deficient number, since it is larger than the sum of its proper divisors (99715990713).

133451555655 is a wasteful number, since it uses less digits than its factorization.

133451555655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 812247.

The product of its digits is 3375000, while the sum is 48.

The spelling of 133451555655 in words is "one hundred thirty-three billion, four hundred fifty-one million, five hundred fifty-five thousand, six hundred fifty-five".