2691428054405 has 8 divisors (see below), whose sum is σ = 3341083102200. Its totient is φ = 2078896152256.

The previous prime is 2691428054339. The next prime is 2691428054411. The reversal of 2691428054405 is 5044508241962.

2691428054405 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 228088387396 + 2463339667009 = 477586^2 + 1569503^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2691428054405 - 2¹⁶ = 2691427988869 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9280786250 + ... + 9280786539.

It is an arithmetic number, because the mean of its divisors is an integer number (417635387775).

Almost surely, 2^{2691428054405} is an apocalyptic number.

It is an amenable number.

2691428054405 is a deficient number, since it is larger than the sum of its proper divisors (649655047795).

2691428054405 is a wasteful number, since it uses less digits than its factorization.

2691428054405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18561572823.

The product of its (nonzero) digits is 2764800, while the sum is 50.

The spelling of 2691428054405 in words is "two trillion, six hundred ninety-one billion, four hundred twenty-eight million, fifty-four thousand, four hundred five".