1006461621556 has 12 divisors (see below), whose sum is σ = 1765906555392. Its totient is φ = 501916891448.

The previous prime is 1006461621533. The next prime is 1006461621559. The reversal of 1006461621556 is 6551261646001.

1006461621556 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1006461621556² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1006461621559) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 328478110 + ... + 328481173.

It is an arithmetic number, because the mean of its divisors is an integer number (147158879616).

Almost surely, 2^{1006461621556} is an apocalyptic number.

It is an amenable number.

1006461621556 is a deficient number, since it is larger than the sum of its proper divisors (759444933836).

1006461621556 is a wasteful number, since it uses less digits than its factorization.

1006461621556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656959670 (or 656959668 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 43.

The spelling of 1006461621556 in words is "one trillion, six billion, four hundred sixty-one million, six hundred twenty-one thousand, five hundred fifty-six".