20429255795387 has 8 divisors (see below), whose sum is σ = 20433424611600. Its totient is φ = 20425087388160.

The previous prime is 20429255795383. The next prime is 20429255795411. The reversal of 20429255795387 is 78359755292402.

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 20429255795387 - 2² = 20429255795383 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20429255795383) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112014023 + ... + 112196255.

It is an arithmetic number, because the mean of its divisors is an integer number (2554178076450).

Almost surely, 2^{20429255795387} is an apocalyptic number.

20429255795387 is a deficient number, since it is larger than the sum of its proper divisors (4168816213).

20429255795387 is a wasteful number, since it uses less digits than its factorization.

20429255795387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204493.

The product of its (nonzero) digits is 381024000, while the sum is 68.

The spelling of 20429255795387 in words is "twenty trillion, four hundred twenty-nine billion, two hundred fifty-five million, seven hundred ninety-five thousand, three hundred eighty-seven".