1041554431021 has 8 divisors (see below), whose sum is σ = 1122696510264. Its totient is φ = 960558424320.

The previous prime is 1041554431013. The next prime is 1041554431031. The reversal of 1041554431021 is 1201344551401.

It can be written as a sum of positive squares in 4 ways, for example, as 19261553796 + 1022292877225 = 138786^2 + 1011085^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1041554431021 - 2³ = 1041554431013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1041554431031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36503320 + ... + 36531841.

It is an arithmetic number, because the mean of its divisors is an integer number (140337063783).

Almost surely, 2^{1041554431021} is an apocalyptic number.

It is an amenable number.

1041554431021 is a deficient number, since it is larger than the sum of its proper divisors (81142079243).

1041554431021 is a wasteful number, since it uses less digits than its factorization.

1041554431021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73036271.

The product of its (nonzero) digits is 9600, while the sum is 31.

Adding to 1041554431021 its reverse (1201344551401), we get a palindrome (2242898982422).

The spelling of 1041554431021 in words is "one trillion, forty-one billion, five hundred fifty-four million, four hundred thirty-one thousand, twenty-one".