1020104499905 has 16 divisors (see below), whose sum is σ = 1238042232000. Its totient is φ = 806836285632.

The previous prime is 1020104499889. The next prime is 1020104499991. The reversal of 1020104499905 is 5099944010201.

It is a cyclic number.

It is not a de Polignac number, because 1020104499905 - 2⁴ = 1020104499889 is a prime.

It is a super-2 number, since 2×1020104499905² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1643594 + ... + 2177523.

It is an arithmetic number, because the mean of its divisors is an integer number (77377639500).

Almost surely, 2^{1020104499905} is an apocalyptic number.

It is an amenable number.

1020104499905 is a deficient number, since it is larger than the sum of its proper divisors (217937732095).

1020104499905 is a wasteful number, since it uses less digits than its factorization.

1020104499905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3821728.

The product of its (nonzero) digits is 116640, while the sum is 44.

The spelling of 1020104499905 in words is "one trillion, twenty billion, one hundred four million, four hundred ninety-nine thousand, nine hundred five".