40000077673 has 4 divisors (see below), whose sum is σ = 40396118148. Its totient is φ = 39604037200.

The previous prime is 40000077671. The next prime is 40000077713. The reversal of 40000077673 is 37677000004.

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 2 ways, for example, as 24833662569 + 15166415104 = 157587^2 + 123152^2 .

It is a cyclic number.

It is not a de Polignac number, because 40000077673 - 2¹ = 40000077671 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40000077671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 198020086 + ... + 198020287.

It is an arithmetic number, because the mean of its divisors is an integer number (10099029537).

Almost surely, 2^40000077673 is an apocalyptic number.

It is an amenable number.

40000077673 is a deficient number, since it is larger than the sum of its proper divisors (396040475).

40000077673 is a wasteful number, since it uses less digits than its factorization.

40000077673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396040474.

The product of its (nonzero) digits is 24696, while the sum is 34.

Adding to 40000077673 its reverse (37677000004), we get a palindrome (77677077677).

The spelling of 40000077673 in words is "forty billion, seventy-seven thousand, six hundred seventy-three".