161372212563 has 8 divisors (see below), whose sum is σ = 216055743376. Its totient is φ = 107135078400.

The previous prime is 161372212523. The next prime is 161372212567. The reversal of 161372212563 is 365212273161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 161372212563 - 2¹⁸ = 161371950419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161372212567) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111598318 + ... + 111599763.

It is an arithmetic number, because the mean of its divisors is an integer number (27006967922).

Almost surely, 2^161372212563 is an apocalyptic number.

161372212563 is a deficient number, since it is larger than the sum of its proper divisors (54683530813).

161372212563 is a wasteful number, since it uses less digits than its factorization.

161372212563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223198325.

The product of its digits is 90720, while the sum is 39.

The spelling of 161372212563 in words is "one hundred sixty-one billion, three hundred seventy-two million, two hundred twelve thousand, five hundred sixty-three".