26340430545 has 48 divisors (see below), whose sum is σ = 53638708032. Its totient is φ = 11788721280.

The previous prime is 26340430489. The next prime is 26340430549. The reversal of 26340430545 is 54503404362.

26340430545 is a `hidden beast` number, since 2 + 6 + 340 + 4 + 305 + 4 + 5 = 666.

It is not a de Polignac number, because 26340430545 - 2²⁰ = 26339381969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (26340430549) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2040219 + ... + 2053088.

It is an arithmetic number, because the mean of its divisors is an integer number (1117473084).

Almost surely, 2^26340430545 is an apocalyptic number.

It is an amenable number.

26340430545 is an abundant number, since it is smaller than the sum of its proper divisors (27298277487).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26340430545 is a wasteful number, since it uses less digits than its factorization.

26340430545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4093342 (or 4093339 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 36.

The spelling of 26340430545 in words is "twenty-six billion, three hundred forty million, four hundred thirty thousand, five hundred forty-five".