145621666241 has 8 divisors (see below), whose sum is σ = 146169382368. Its totient is φ = 145074600000.

The previous prime is 145621666219. The next prime is 145621666261. The reversal of 145621666241 is 142666126541.

145621666241 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145621666241 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 145621666192 and 145621666201.

It is not an unprimeable number, because it can be changed into a prime (145621666261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 288866 + ... + 612116.

It is an arithmetic number, because the mean of its divisors is an integer number (18271172796).

Almost surely, 2^145621666241 is an apocalyptic number.

It is an amenable number.

145621666241 is a deficient number, since it is larger than the sum of its proper divisors (547716127).

145621666241 is a wasteful number, since it uses less digits than its factorization.

145621666241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324943.

The product of its digits is 414720, while the sum is 44.

The spelling of 145621666241 in words is "one hundred forty-five billion, six hundred twenty-one million, six hundred sixty-six thousand, two hundred forty-one".