28293540581429 has 4 divisors (see below), whose sum is σ = 29523694519776. Its totient is φ = 27063386643084.

The previous prime is 28293540581407. The next prime is 28293540581431. The reversal of 28293540581429 is 92418504539282.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28293540581429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28293540581329) 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, 615076969139 + ... + 615076969184.

It is an arithmetic number, because the mean of its divisors is an integer number (7380923629944).

Almost surely, 2^{28293540581429} is an apocalyptic number.

It is an amenable number.

28293540581429 is a deficient number, since it is larger than the sum of its proper divisors (1230153938347).

28293540581429 is a wasteful number, since it uses less digits than its factorization.

28293540581429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1230153938346.

The product of its (nonzero) digits is 49766400, while the sum is 62.

The spelling of 28293540581429 in words is "twenty-eight trillion, two hundred ninety-three billion, five hundred forty million, five hundred eighty-one thousand, four hundred twenty-nine".