1550621230464 has 128 divisors (see below), whose sum is σ = 4397870188800. Its totient is φ = 482903156736.

The previous prime is 1550621230427. The next prime is 1550621230517. The reversal of 1550621230464 is 4640321260551.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1661719 + ... + 2421270.

It is an arithmetic number, because the mean of its divisors is an integer number (34358360850).

Almost surely, 2^{1550621230464} is an apocalyptic number.

It is an amenable number.

1550621230464 is an abundant number, since it is smaller than the sum of its proper divisors (2847248958336).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1550621230464 is a wasteful number, since it uses less digits than its factorization.

1550621230464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4083072 (or 4083060 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 39.

The spelling of 1550621230464 in words is "one trillion, five hundred fifty billion, six hundred twenty-one million, two hundred thirty thousand, four hundred sixty-four".