145661546361 has 8 divisors (see below), whose sum is σ = 194246881920. Its totient is φ = 97091954192.

The previous prime is 145661546357. The next prime is 145661546441. The reversal of 145661546361 is 163645166541.

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

It is a cyclic number.

It is not a de Polignac number, because 145661546361 - 2² = 145661546357 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 145661546361.

It is not an unprimeable number, because it can be changed into a prime (145661546311) 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, 3914241 + ... + 3951278.

It is an arithmetic number, because the mean of its divisors is an integer number (24280860240).

Almost surely, 2^145661546361 is an apocalyptic number.

It is an amenable number.

145661546361 is a deficient number, since it is larger than the sum of its proper divisors (48585335559).

145661546361 is an equidigital number, since it uses as much as digits as its factorization.

145661546361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7871695.

The product of its digits is 1555200, while the sum is 48.

The spelling of 145661546361 in words is "one hundred forty-five billion, six hundred sixty-one million, five hundred forty-six thousand, three hundred sixty-one".