245310501021545 has 16 divisors (see below), whose sum is σ = 301555491913872. Its totient is φ = 191459904522240.

The previous prime is 245310501021541. The next prime is 245310501021559. The reversal of 245310501021545 is 545120105013542.

It can be written as a sum of positive squares in 8 ways, for example, as 2879279560336 + 242431221461209 = 1696844^2 + 15570203^2 .

It is not a de Polignac number, because 245310501021545 - 2² = 245310501021541 is a prime.

It is a super-2 number, since 2×245310501021545² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 245310501021499 and 245310501021508.

It is not an unprimeable number, because it can be changed into a prime (245310501021541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14249519 + ... + 26337611.

It is an arithmetic number, because the mean of its divisors is an integer number (18847218244617).

Almost surely, 2^{245310501021545} is an apocalyptic number.

It is an amenable number.

245310501021545 is a deficient number, since it is larger than the sum of its proper divisors (56244990892327).

245310501021545 is a wasteful number, since it uses less digits than its factorization.

245310501021545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12187132.

The product of its (nonzero) digits is 120000, while the sum is 38.

The spelling of 245310501021545 in words is "two hundred forty-five trillion, three hundred ten billion, five hundred one million, twenty-one thousand, five hundred forty-five".