40897377361 has 3 divisors (see below), whose sum is σ = 40897579593. Its totient is φ = 40897175130.

The previous prime is 40897377307. The next prime is 40897377371. The reversal of 40897377361 is 16377379804.

The square root of 40897377361 is 202231.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 40897377361 - 2¹¹ = 40897375313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40897377371) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 101116 + ... + 303346.

It is an arithmetic number, because the mean of its divisors is an integer number (13632526531).

Almost surely, 2^40897377361 is an apocalyptic number.

40897377361 is the 202231-st square number.

40897377361 is the 101116-th centered octagonal number.

It is an amenable number.

40897377361 is a deficient number, since it is larger than the sum of its proper divisors (202232).

40897377361 is an frugal number, since it uses more digits than its factorization.

40897377361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404462 (or 202231 counting only the distinct ones).

The product of its (nonzero) digits is 5334336, while the sum is 55.

The spelling of 40897377361 in words is "forty billion, eight hundred ninety-seven million, three hundred seventy-seven thousand, three hundred sixty-one".