1294135283639 has 16 divisors (see below), whose sum is σ = 1427357894400. Its totient is φ = 1163545056960.

The previous prime is 1294135283533. The next prime is 1294135283653. The reversal of 1294135283639 is 9363825314921.

It is a de Polignac number, because none of the positive numbers 2^k-1294135283639 is a prime.

It is a super-2 number, since 2×1294135283639² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1294135283239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 212774 + ... + 1622819.

It is an arithmetic number, because the mean of its divisors is an integer number (89209868400).

Almost surely, 2^{1294135283639} is an apocalyptic number.

1294135283639 is a deficient number, since it is larger than the sum of its proper divisors (133222610761).

1294135283639 is a wasteful number, since it uses less digits than its factorization.

1294135283639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1836310.

The product of its digits is 8398080, while the sum is 56.

The spelling of 1294135283639 in words is "one trillion, two hundred ninety-four billion, one hundred thirty-five million, two hundred eighty-three thousand, six hundred thirty-nine".