553660920449 has 24 divisors (see below), whose sum is σ = 701884536192. Its totient is φ = 427376926080.

The previous prime is 553660920389. The next prime is 553660920479. The reversal of 553660920449 is 944029066355.

It is a happy number.

It is not a de Polignac number, because 553660920449 - 2¹² = 553660916353 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 553660920449.

It is not an unprimeable number, because it can be changed into a prime (553660920479) 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, 5658989 + ... + 5755994.

It is an arithmetic number, because the mean of its divisors is an integer number (29245189008).

Almost surely, 2^553660920449 is an apocalyptic number.

It is an amenable number.

553660920449 is a deficient number, since it is larger than the sum of its proper divisors (148223615743).

553660920449 is a wasteful number, since it uses less digits than its factorization.

553660920449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11415057 (or 11415044 counting only the distinct ones).

The product of its (nonzero) digits is 6998400, while the sum is 53.

It can be divided in two parts, 5536609 and 20449, that multiplied together give a square (113218117441 = 336479²).

The spelling of 553660920449 in words is "five hundred fifty-three billion, six hundred sixty million, nine hundred twenty thousand, four hundred forty-nine".