40780167481 has 9 divisors (see below), whose sum is σ = 41261704941. Its totient is φ = 40304192544.

The previous prime is 40780167469. The next prime is 40780167497. The reversal of 40780167481 is 18476108704.

The square root of 40780167481 is 201941.

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

It can be written as a sum of positive squares in 4 ways, for example, as 25379357481 + 15400810000 = 159309^2 + 124100^2 .

It is not a de Polignac number, because 40780167481 - 2¹³ = 40780159289 is a prime.

It is a super-2 number, since 2×40780167481² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40780167781) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 17971615 + ... + 17973883.

Almost surely, 2^40780167481 is an apocalyptic number.

40780167481 is the 201941-st square number.

40780167481 is the 100971-st centered octagonal number.

It is an amenable number.

40780167481 is a deficient number, since it is larger than the sum of its proper divisors (481537460).

40780167481 is an frugal number, since it uses more digits than its factorization.

40780167481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4716 (or 2358 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 46.

The spelling of 40780167481 in words is "forty billion, seven hundred eighty million, one hundred sixty-seven thousand, four hundred eighty-one".