1542758644840 has 256 divisors, whose sum is σ = 4351555353600. Its totient is φ = 479972376576.

The previous prime is 1542758644829. The next prime is 1542758644853. The reversal of 1542758644840 is 484468572451.

It is a Harshad number since it is a multiple of its sum of digits (58).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 100347394 + ... + 100362766.

It is an arithmetic number, because the mean of its divisors is an integer number (16998263100).

Almost surely, 2^{1542758644840} is an apocalyptic number.

1542758644840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1542758644840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2175777676800).

1542758644840 is an abundant number, since it is smaller than the sum of its proper divisors (2808796708760).

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

1542758644840 is a wasteful number, since it uses less digits than its factorization.

1542758644840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16164 (or 16160 counting only the distinct ones).

The product of its (nonzero) digits is 34406400, while the sum is 58.

The spelling of 1542758644840 in words is "one trillion, five hundred forty-two billion, seven hundred fifty-eight million, six hundred forty-four thousand, eight hundred forty".