1621615606150 has 24 divisors (see below), whose sum is σ = 3089771007624. Its totient is φ = 632825601600.

The previous prime is 1621615606111. The next prime is 1621615606157. The reversal of 1621615606150 is 516065161261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1621615606157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 395513952 + ... + 395518051.

It is an arithmetic number, because the mean of its divisors is an integer number (128740458651).

Almost surely, 2^{1621615606150} is an apocalyptic number.

1621615606150 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1621615606150 is a deficient number, since it is larger than the sum of its proper divisors (1468155401474).

1621615606150 is a wasteful number, since it uses less digits than its factorization.

1621615606150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 791032056 (or 791032051 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 40.

The spelling of 1621615606150 in words is "one trillion, six hundred twenty-one billion, six hundred fifteen million, six hundred six thousand, one hundred fifty".