134312002561 has 16 divisors (see below), whose sum is σ = 156037943808. Its totient is φ = 114255059200.

The previous prime is 134312002543. The next prime is 134312002567. The reversal of 134312002561 is 165200213431.

It is a cyclic number.

It is not a de Polignac number, because 134312002561 - 2¹⁵ = 134311969793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (134312002567) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2043505 + ... + 2108206.

It is an arithmetic number, because the mean of its divisors is an integer number (9752371488).

Almost surely, 2^134312002561 is an apocalyptic number.

134312002561 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

134312002561 is a deficient number, since it is larger than the sum of its proper divisors (21725941247).

134312002561 is a wasteful number, since it uses less digits than its factorization.

134312002561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4151912.

The product of its (nonzero) digits is 4320, while the sum is 28.

Adding to 134312002561 its reverse (165200213431), we get a palindrome (299512215992).

The spelling of 134312002561 in words is "one hundred thirty-four billion, three hundred twelve million, two thousand, five hundred sixty-one".