40168646357 has 12 divisors (see below), whose sum is σ = 46936342656. Its totient is φ = 34275863160.

The previous prime is 40168646327. The next prime is 40168646389. The reversal of 40168646357 is 75364686104.

It is not a de Polignac number, because 40168646357 - 2¹⁰ = 40168645333 is a prime.

It is a super-2 number, since 2×40168646357² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40168646327) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1827119 + ... + 1848972.

It is an arithmetic number, because the mean of its divisors is an integer number (3911361888).

Almost surely, 2^40168646357 is an apocalyptic number.

It is an amenable number.

40168646357 is a deficient number, since it is larger than the sum of its proper divisors (6767696299).

40168646357 is a wasteful number, since it uses less digits than its factorization.

40168646357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3676328 (or 3676321 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 50.

The spelling of 40168646357 in words is "forty billion, one hundred sixty-eight million, six hundred forty-six thousand, three hundred fifty-seven".