1621652140134 has 24 divisors (see below), whose sum is σ = 3783854994192. Its totient is φ = 498969889200.

The previous prime is 1621652140133. The next prime is 1621652140139. The reversal of 1621652140134 is 4310412561261.

1621652140134 is a `hidden beast` number, since 1 + 6 + 216 + 5 + 2 + 1 + 401 + 34 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1621652140133) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3465068442 + ... + 3465068909.

It is an arithmetic number, because the mean of its divisors is an integer number (157660624758).

Almost surely, 2^{1621652140134} is an apocalyptic number.

1621652140134 is an abundant number, since it is smaller than the sum of its proper divisors (2162202854058).

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

1621652140134 is a wasteful number, since it uses less digits than its factorization.

1621652140134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6930137372 (or 6930137369 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The spelling of 1621652140134 in words is "one trillion, six hundred twenty-one billion, six hundred fifty-two million, one hundred forty thousand, one hundred thirty-four".