40000077164 has 12 divisors (see below), whose sum is σ = 70002395904. Its totient is φ = 19999392624.

The previous prime is 40000077163. The next prime is 40000077191. The reversal of 40000077164 is 46177000004.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (40000077163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5399 + ... + 282894.

It is an arithmetic number, because the mean of its divisors is an integer number (5833532992).

Almost surely, 2^40000077164 is an apocalyptic number.

It is an amenable number.

40000077164 is a deficient number, since it is larger than the sum of its proper divisors (30002318740).

40000077164 is a wasteful number, since it uses less digits than its factorization.

40000077164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322984 (or 322982 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 29.

Adding to 40000077164 its reverse (46177000004), we get a palindrome (86177077168).

The spelling of 40000077164 in words is "forty billion, seventy-seven thousand, one hundred sixty-four".