534520134405021 has 4 divisors (see below), whose sum is σ = 712693512540032. Its totient is φ = 356346756270012.

The previous prime is 534520134405011. The next prime is 534520134405053. The reversal of 534520134405021 is 120504431025435.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 534520134405021 - 2⁵ = 534520134404989 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (534520134405011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89086689067501 + ... + 89086689067506.

It is an arithmetic number, because the mean of its divisors is an integer number (178173378135008).

Almost surely, 2^{534520134405021} is an apocalyptic number.

It is an amenable number.

534520134405021 is a deficient number, since it is larger than the sum of its proper divisors (178173378135011).

534520134405021 is a wasteful number, since it uses less digits than its factorization.

534520134405021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178173378135010.

The product of its (nonzero) digits is 288000, while the sum is 39.

The spelling of 534520134405021 in words is "five hundred thirty-four trillion, five hundred twenty billion, one hundred thirty-four million, four hundred five thousand, twenty-one".