1017049621554 has 16 divisors (see below), whose sum is σ = 2260110270240. Its totient is φ = 339016540500.

The previous prime is 1017049621513. The next prime is 1017049621573. The reversal of 1017049621554 is 4551269407101.

1017049621554 is a `hidden beast` number, since 1 + 0 + 1 + 7 + 0 + 4 + 96 + 2 + 1 + 554 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9417126072 + ... + 9417126179.

It is an arithmetic number, because the mean of its divisors is an integer number (141256891890).

Almost surely, 2^{1017049621554} is an apocalyptic number.

1017049621554 is an abundant number, since it is smaller than the sum of its proper divisors (1243060648686).

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

1017049621554 is a wasteful number, since it uses less digits than its factorization.

1017049621554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18834252262 (or 18834252256 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 45.

The spelling of 1017049621554 in words is "one trillion, seventeen billion, forty-nine million, six hundred twenty-one thousand, five hundred fifty-four".