154720421705345 has 16 divisors (see below), whose sum is σ = 206932576400640. Its totient is φ = 110364040744704.

The previous prime is 154720421705341. The next prime is 154720421705347. The reversal of 154720421705345 is 543507124027451.

It is a cyclic number.

It is not a de Polignac number, because 154720421705345 - 2² = 154720421705341 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 154720421705293 and 154720421705302.

It is not an unprimeable number, because it can be changed into a prime (154720421705341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47901057737 + ... + 47901060966.

It is an arithmetic number, because the mean of its divisors is an integer number (12933286025040).

Almost surely, 2^{154720421705345} is an apocalyptic number.

It is an amenable number.

154720421705345 is a deficient number, since it is larger than the sum of its proper divisors (52212154695295).

154720421705345 is a wasteful number, since it uses less digits than its factorization.

154720421705345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95802118744.

The product of its (nonzero) digits is 4704000, while the sum is 50.

The spelling of 154720421705345 in words is "one hundred fifty-four trillion, seven hundred twenty billion, four hundred twenty-one million, seven hundred five thousand, three hundred forty-five".