2161652352123 has 32 divisors (see below), whose sum is σ = 3146669309952. Its totient is φ = 1309072960800.

The previous prime is 2161652352109. The next prime is 2161652352133. The reversal of 2161652352123 is 3212532561612.

It is not a de Polignac number, because 2161652352123 - 2¹⁸ = 2161652089979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2161652352133) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 395108278 + ... + 395113748.

It is an arithmetic number, because the mean of its divisors is an integer number (98333415936).

Almost surely, 2^{2161652352123} is an apocalyptic number.

2161652352123 is a deficient number, since it is larger than the sum of its proper divisors (985016957829).

2161652352123 is a wasteful number, since it uses less digits than its factorization.

2161652352123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12615.

The product of its digits is 129600, while the sum is 39.

The spelling of 2161652352123 in words is "two trillion, one hundred sixty-one billion, six hundred fifty-two million, three hundred fifty-two thousand, one hundred twenty-three".