1284695994477 has 16 divisors (see below), whose sum is σ = 1957676298752. Its totient is φ = 734095381680.

The previous prime is 1284695994469. The next prime is 1284695994487. The reversal of 1284695994477 is 7744995964821.

It is not a de Polignac number, because 1284695994477 - 2³ = 1284695994469 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1284695994399 and 1284695994408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1284695994457) 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, 290058 + ... + 1628964.

It is an arithmetic number, because the mean of its divisors is an integer number (122354768672).

Almost surely, 2^{1284695994477} is an apocalyptic number.

It is an amenable number.

1284695994477 is a deficient number, since it is larger than the sum of its proper divisors (672980304275).

1284695994477 is a wasteful number, since it uses less digits than its factorization.

1284695994477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1384608.

The product of its digits is 1097349120, while the sum is 75.

The spelling of 1284695994477 in words is "one trillion, two hundred eighty-four billion, six hundred ninety-five million, nine hundred ninety-four thousand, four hundred seventy-seven".