1131554440254 has 16 divisors (see below), whose sum is σ = 2586410149248. Its totient is φ = 323301268632.

The previous prime is 1131554440253. The next prime is 1131554440277. The reversal of 1131554440254 is 4520444551311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131554440253) 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, 13470886152 + ... + 13470886235.

It is an arithmetic number, because the mean of its divisors is an integer number (161650634328).

Almost surely, 2^{1131554440254} is an apocalyptic number.

1131554440254 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1131554440254 is an abundant number, since it is smaller than the sum of its proper divisors (1454855708994).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1131554440254 is a wasteful number, since it uses less digits than its factorization.

1131554440254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26941772399.

The product of its (nonzero) digits is 192000, while the sum is 39.

Adding to 1131554440254 its reverse (4520444551311), we get a palindrome (5651998991565).

The spelling of 1131554440254 in words is "one trillion, one hundred thirty-one billion, five hundred fifty-four million, four hundred forty thousand, two hundred fifty-four".