134521691467 has 16 divisors (see below), whose sum is σ = 139369870080. Its totient is φ = 129740293728.

The previous prime is 134521691453. The next prime is 134521691477. The reversal of 134521691467 is 764196125431.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-134521691467 is a prime.

It is a super-2 number, since 2×134521691467² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 134521691467.

It is not an unprimeable number, because it can be changed into a prime (134521691477) 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, 3307308 + ... + 3347734.

It is an arithmetic number, because the mean of its divisors is an integer number (8710616880).

Almost surely, 2^134521691467 is an apocalyptic number.

134521691467 is a deficient number, since it is larger than the sum of its proper divisors (4848178613).

134521691467 is a wasteful number, since it uses less digits than its factorization.

134521691467 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41250.

The product of its digits is 1088640, while the sum is 49.

The spelling of 134521691467 in words is "one hundred thirty-four billion, five hundred twenty-one million, six hundred ninety-one thousand, four hundred sixty-seven".