1055511331540 has 12 divisors (see below), whose sum is σ = 2216573796276. Its totient is φ = 422204532608.

The previous prime is 1055511331519. The next prime is 1055511331541. The reversal of 1055511331540 is 451331155501.

It can be written as a sum of positive squares in 2 ways, for example, as 745525179844 + 309986151696 = 863438^2 + 556764^2 .

It is a super-2 number, since 2×1055511331540² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1055511331496 and 1055511331505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1055511331541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26387783269 + ... + 26387783308.

It is an arithmetic number, because the mean of its divisors is an integer number (184714483023).

Almost surely, 2^{1055511331540} is an apocalyptic number.

1055511331540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1055511331540 is an abundant number, since it is smaller than the sum of its proper divisors (1161062464736).

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

1055511331540 is a wasteful number, since it uses less digits than its factorization.

1055511331540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52775566586 (or 52775566584 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 34.

The spelling of 1055511331540 in words is "one trillion, fifty-five billion, five hundred eleven million, three hundred thirty-one thousand, five hundred forty".