1540453134020 has 48 divisors (see below), whose sum is σ = 3295177971120. Its totient is φ = 604810635264.

The previous prime is 1540453133977. The next prime is 1540453134061. The reversal of 1540453134020 is 204313540451.

It can be written as a sum of positive squares in 8 ways, for example, as 61519873024 + 1478933260996 = 248032^2 + 1216114^2 .

It is a super-2 number, since 2×1540453134020² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2914619 + ... + 3402338.

It is an arithmetic number, because the mean of its divisors is an integer number (68649541065).

Almost surely, 2^{1540453134020} is an apocalyptic number.

1540453134020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1540453134020 is an abundant number, since it is smaller than the sum of its proper divisors (1754724837100).

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

1540453134020 is a wasteful number, since it uses less digits than its factorization.

1540453134020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6317192 (or 6317190 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 32.

Adding to 1540453134020 its reverse (204313540451), we get a palindrome (1744766674471).

The spelling of 1540453134020 in words is "one trillion, five hundred forty billion, four hundred fifty-three million, one hundred thirty-four thousand, twenty".