145561006751605 has 16 divisors (see below), whose sum is σ = 174861706900464. Its totient is φ = 116323175088640.

The previous prime is 145561006751599. The next prime is 145561006751617. The reversal of 145561006751605 is 506157600165541.

It can be written as a sum of positive squares in 8 ways, for example, as 16928344961649 + 128632661789956 = 4114407^2 + 11341634^2 .

It is not a de Polignac number, because 145561006751605 - 2⁴⁵ = 110376634662773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30587259 + ... + 35024311.

It is an arithmetic number, because the mean of its divisors is an integer number (10928856681279).

Almost surely, 2^{145561006751605} is an apocalyptic number.

It is an amenable number.

145561006751605 is a deficient number, since it is larger than the sum of its proper divisors (29300700148859).

145561006751605 is a wasteful number, since it uses less digits than its factorization.

145561006751605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4444136.

The product of its (nonzero) digits is 3780000, while the sum is 52.

The spelling of 145561006751605 in words is "one hundred forty-five trillion, five hundred sixty-one billion, six million, seven hundred fifty-one thousand, six hundred five".