367440856561 has 27 divisors (see below), whose sum is σ = 394497333507. Its totient is φ = 342170277120.

The previous prime is 367440856553. The next prime is 367440856609. The reversal of 367440856561 is 165658044763.

It is a happy number.

The square root of 367440856561 is 606169.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 13 ways, for example, as 93074416561 + 274366440000 = 305081^2 + 523800^2 .

It is not a de Polignac number, because 367440856561 - 2³ = 367440856553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (367440857561) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1865181915 + ... + 1865182111.

Almost surely, 2^367440856561 is an apocalyptic number.

367440856561 is the 606169-th square number.

367440856561 is the 303085-th centered octagonal number.

It is an amenable number.

367440856561 is a deficient number, since it is larger than the sum of its proper divisors (27056476946).

367440856561 is an frugal number, since it uses more digits than its factorization.

367440856561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 790 (or 395 counting only the distinct ones).

The product of its (nonzero) digits is 14515200, while the sum is 55.

The spelling of 367440856561 in words is "three hundred sixty-seven billion, four hundred forty million, eight hundred fifty-six thousand, five hundred sixty-one".