1559796669981 has 24 divisors (see below), whose sum is σ = 2602441505664. Its totient is φ = 889723589760.

The previous prime is 1559796669931. The next prime is 1559796670027. The reversal of 1559796669981 is 1899666979551.

It is not a de Polignac number, because 1559796669981 - 2¹⁸ = 1559796407837 is a prime.

It is a super-2 number, since 2×1559796669981² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1559796669981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1559796669931) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 463396021 + ... + 463399386.

It is an arithmetic number, because the mean of its divisors is an integer number (108435062736).

Almost surely, 2^{1559796669981} is an apocalyptic number.

1559796669981 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1559796669981 is a deficient number, since it is larger than the sum of its proper divisors (1042644835683).

1559796669981 is a wasteful number, since it uses less digits than its factorization.

1559796669981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 926795441 (or 926795438 counting only the distinct ones).

The product of its digits is 1984046400, while the sum is 81.

The spelling of 1559796669981 in words is "one trillion, five hundred fifty-nine billion, seven hundred ninety-six million, six hundred sixty-nine thousand, nine hundred eighty-one".