40346164521 has 12 divisors (see below), whose sum is σ = 62760700548. Its totient is φ = 24828408864.

The previous prime is 40346164501. The next prime is 40346164531. The reversal of 40346164521 is 12546164304.

40346164521 is a `hidden beast` number, since 4 + 0 + 3 + 4 + 6 + 1 + 645 + 2 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 25702502400 + 14643662121 = 160320^2 + 121011^2 .

It is not a de Polignac number, because 40346164521 - 2⁷ = 40346164393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40346164501) 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 11 ways as a sum of consecutive naturals, for example, 172419390 + ... + 172419623.

It is an arithmetic number, because the mean of its divisors is an integer number (5230058379).

Almost surely, 2^40346164521 is an apocalyptic number.

It is an amenable number.

40346164521 is a deficient number, since it is larger than the sum of its proper divisors (22414536027).

40346164521 is a wasteful number, since it uses less digits than its factorization.

40346164521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344839032 (or 344839029 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The spelling of 40346164521 in words is "forty billion, three hundred forty-six million, one hundred sixty-four thousand, five hundred twenty-one".