27405429451 has 16 divisors (see below), whose sum is σ = 27937314720. Its totient is φ = 26878839040.

The previous prime is 27405429439. The next prime is 27405429473. The reversal of 27405429451 is 15492450472.

It is a cyclic number.

It is not a de Polignac number, because 27405429451 - 2¹⁷ = 27405298379 is a prime.

It is a super-2 number, since 2×27405429451² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 27405429398 and 27405429407.

It is not an unprimeable number, because it can be changed into a prime (27405429851) 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, 15923271 + ... + 15924991.

It is an arithmetic number, because the mean of its divisors is an integer number (1746082170).

Almost surely, 2^27405429451 is an apocalyptic number.

27405429451 is a deficient number, since it is larger than the sum of its proper divisors (531885269).

27405429451 is a wasteful number, since it uses less digits than its factorization.

27405429451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3086.

The product of its (nonzero) digits is 403200, while the sum is 43.

The spelling of 27405429451 in words is "twenty-seven billion, four hundred five million, four hundred twenty-nine thousand, four hundred fifty-one".