1018061447081 has 16 divisors (see below), whose sum is σ = 1174195432704. Its totient is φ = 864606887424.

The previous prime is 1018061447023. The next prime is 1018061447083. The reversal of 1018061447081 is 1807441608101.

It is not a de Polignac number, because 1018061447081 - 2²⁶ = 1017994338217 is a prime.

It is a super-2 number, since 2×1018061447081² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1018061447083) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2117900 + ... + 2553746.

It is an arithmetic number, because the mean of its divisors is an integer number (73387214544).

Almost surely, 2^{1018061447081} is an apocalyptic number.

It is an amenable number.

1018061447081 is a deficient number, since it is larger than the sum of its proper divisors (156133985623).

1018061447081 is a wasteful number, since it uses less digits than its factorization.

1018061447081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438920.

The product of its (nonzero) digits is 43008, while the sum is 41.

The spelling of 1018061447081 in words is "one trillion, eighteen billion, sixty-one million, four hundred forty-seven thousand, eighty-one".