1054021144155 has 96 divisors (see below), whose sum is σ = 2035084953600. Its totient is φ = 463923871488.

The previous prime is 1054021144153. The next prime is 1054021144171. The reversal of 1054021144155 is 5514411204501.

It is not a de Polignac number, because 1054021144155 - 2¹ = 1054021144153 is a prime.

It is a super-2 number, since 2×1054021144155² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1054021144153) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 7583214 + ... + 7720956.

It is an arithmetic number, because the mean of its divisors is an integer number (21198801600).

Almost surely, 2^{1054021144155} is an apocalyptic number.

1054021144155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1054021144155 is a deficient number, since it is larger than the sum of its proper divisors (981063809445).

1054021144155 is a wasteful number, since it uses less digits than its factorization.

1054021144155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138153 (or 138146 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 33.

Adding to 1054021144155 its reverse (5514411204501), we get a palindrome (6568432348656).

The spelling of 1054021144155 in words is "one trillion, fifty-four billion, twenty-one million, one hundred forty-four thousand, one hundred fifty-five".