1408921129085 has 16 divisors (see below), whose sum is σ = 1764247215744. Its totient is φ = 1078110825792.

The previous prime is 1408921129081. The next prime is 1408921129093. The reversal of 1408921129085 is 5809211298041.

It is a cyclic number.

It is not a de Polignac number, because 1408921129085 - 2² = 1408921129081 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 (1408921129081) 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, 9777419 + ... + 9920471.

It is an arithmetic number, because the mean of its divisors is an integer number (110265450984).

Almost surely, 2^{1408921129085} is an apocalyptic number.

It is an amenable number.

1408921129085 is a deficient number, since it is larger than the sum of its proper divisors (355326086659).

1408921129085 is a wasteful number, since it uses less digits than its factorization.

1408921129085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228724.

The product of its (nonzero) digits is 414720, while the sum is 50.

The spelling of 1408921129085 in words is "one trillion, four hundred eight billion, nine hundred twenty-one million, one hundred twenty-nine thousand, eighty-five".