361261662544154 has 4 divisors (see below), whose sum is σ = 541892493816234. Its totient is φ = 180630831272076.

The previous prime is 361261662544127. The next prime is 361261662544177. The reversal of 361261662544154 is 451445266162163.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 299582268318025 + 61679394226129 = 17308445^2 + 7853623^2 .

It is a super-2 number, since 2×361261662544154² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 361261662544154.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90315415636037 + ... + 90315415636040.

Almost surely, 2^{361261662544154} is an apocalyptic number.

361261662544154 is a deficient number, since it is larger than the sum of its proper divisors (180630831272080).

361261662544154 is a wasteful number, since it uses less digits than its factorization.

361261662544154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180630831272079.

The product of its digits is 24883200, while the sum is 56.

The spelling of 361261662544154 in words is "three hundred sixty-one trillion, two hundred sixty-one billion, six hundred sixty-two million, five hundred forty-four thousand, one hundred fifty-four".