1541820680450 has 54 divisors (see below), whose sum is σ = 2940124941147. Its totient is φ = 601545636800.

The previous prime is 1541820680443. The next prime is 1541820680453. The reversal of 1541820680450 is 540860281451.

It can be written as a sum of positive squares in 5 ways, for example, as 9704023081 + 1532116657369 = 98509^2 + 1237787^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=878015.

It is a super-2 number, since 2×1541820680450² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1541820680453) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 359984009 + ... + 359988291.

Almost surely, 2^{1541820680450} is an apocalyptic number.

1541820680450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1541820680450 is a deficient number, since it is larger than the sum of its proper divisors (1398304260697).

1541820680450 is an frugal number, since it uses more digits than its factorization.

1541820680450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8660 (or 4331 counting only the distinct ones).

The product of its (nonzero) digits is 307200, while the sum is 44.

The spelling of 1541820680450 in words is "one trillion, five hundred forty-one billion, eight hundred twenty million, six hundred eighty thousand, four hundred fifty".