1285630552719 has 32 divisors (see below), whose sum is σ = 1989308390400. Its totient is φ = 819055052640.

The previous prime is 1285630552699. The next prime is 1285630552733. The reversal of 1285630552719 is 9172550365821.

1285630552719 is a `hidden beast` number, since 1 + 2 + 8 + 56 + 30 + 552 + 7 + 1 + 9 = 666.

It is not a de Polignac number, because 1285630552719 - 2¹¹ = 1285630550671 is a prime.

It is a super-2 number, since 2×1285630552719² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1285630552799) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 304467 + ... + 1632164.

It is an arithmetic number, because the mean of its divisors is an integer number (62165887200).

Almost surely, 2^{1285630552719} is an apocalyptic number.

1285630552719 is a deficient number, since it is larger than the sum of its proper divisors (703677837681).

1285630552719 is a wasteful number, since it uses less digits than its factorization.

1285630552719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1937732 (or 1937726 counting only the distinct ones).

The product of its (nonzero) digits is 4536000, while the sum is 54.

The spelling of 1285630552719 in words is "one trillion, two hundred eighty-five billion, six hundred thirty million, five hundred fifty-two thousand, seven hundred nineteen".