145565601562 has 4 divisors (see below), whose sum is σ = 218348402346. Its totient is φ = 72782800780.

The previous prime is 145565601547. The next prime is 145565601637. The reversal of 145565601562 is 265106565541.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 265106565541 = 2347 ⋅112955503.

It can be written as a sum of positive squares in only one way, i.e., 83619867241 + 61945734321 = 289171^2 + 248889^2 .

It is a super-3 number, since 3×145565601562³ (a number of 34 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36391400389 + ... + 36391400392.

Almost surely, 2^145565601562 is an apocalyptic number.

145565601562 is a deficient number, since it is larger than the sum of its proper divisors (72782800784).

145565601562 is an equidigital number, since it uses as much as digits as its factorization.

145565601562 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72782800783.

The product of its (nonzero) digits is 1080000, while the sum is 46.

The spelling of 145565601562 in words is "one hundred forty-five billion, five hundred sixty-five million, six hundred one thousand, five hundred sixty-two".