1538765166650 has 48 divisors (see below), whose sum is σ = 3015359861760. Its totient is φ = 582603984000.

The previous prime is 1538765166599. The next prime is 1538765166667. The reversal of 1538765166650 is 566615678351.

It is a self number, because there is not a number n which added to its sum of digits gives 1538765166650.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 389822 + ... + 1797078.

It is an arithmetic number, because the mean of its divisors is an integer number (62819997120).

Almost surely, 2^{1538765166650} is an apocalyptic number.

1538765166650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1538765166650 is a deficient number, since it is larger than the sum of its proper divisors (1476594695110).

1538765166650 is a wasteful number, since it uses less digits than its factorization.

1538765166650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1408439 (or 1408434 counting only the distinct ones).

The product of its (nonzero) digits is 27216000, while the sum is 59.

The spelling of 1538765166650 in words is "one trillion, five hundred thirty-eight billion, seven hundred sixty-five million, one hundred sixty-six thousand, six hundred fifty".