242501242315545 has 72 divisors (see below), whose sum is σ = 421811264576520. Its totient is φ = 128881023598080.

The previous prime is 242501242315511. The next prime is 242501242315571. The reversal of 242501242315545 is 545513242105242.

242501242315545 is a `hidden beast` number, since 2 + 4 + 2 + 50 + 1 + 2 + 42 + 3 + 1 + 554 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 21268846817856 + 221232395497689 = 4611816^2 + 14873883^2 .

It is not a de Polignac number, because 242501242315545 - 2¹¹ = 242501242313497 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 242501242315545.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 9814275651 + ... + 9814300359.

It is an arithmetic number, because the mean of its divisors is an integer number (5858489785785).

Almost surely, 2^{242501242315545} is an apocalyptic number.

It is an amenable number.

242501242315545 is a deficient number, since it is larger than the sum of its proper divisors (179310022260975).

242501242315545 is an equidigital number, since it uses as much as digits as its factorization.

242501242315545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26535 (or 25885 counting only the distinct ones).

The product of its (nonzero) digits is 1920000, while the sum is 45.

The spelling of 242501242315545 in words is "two hundred forty-two trillion, five hundred one billion, two hundred forty-two million, three hundred fifteen thousand, five hundred forty-five".