1055018633881 has 9 divisors (see below), whose sum is σ = 1080169759701. Its totient is φ = 1030440176892.

The previous prime is 1055018633873. The next prime is 1055018633891. The reversal of 1055018633881 is 1883368105501.

The square root of 1055018633881 is 1027141.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 1055018633881 - 2³ = 1055018633873 is a prime.

It is a super-2 number, since 2×1055018633881² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1055018633891) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 44155120 + ... + 44179006.

It is an arithmetic number, because the mean of its divisors is an integer number (120018862189).

Almost surely, 2^{1055018633881} is an apocalyptic number.

1055018633881 is the 1027141-st square number.

1055018633881 is the 513571-st centered octagonal number.

It is an amenable number.

1055018633881 is a deficient number, since it is larger than the sum of its proper divisors (25151125820).

1055018633881 is an frugal number, since it uses more digits than its factorization.

1055018633881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47860 (or 23930 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 49.

Multiplying 1055018633881 by its sum of digits (49), we get a square (51695913060169 = 7189987²).

The spelling of 1055018633881 in words is "one trillion, fifty-five billion, eighteen million, six hundred thirty-three thousand, eight hundred eighty-one".