40027646663642 has 16 divisors (see below), whose sum is σ = 65573629659072. Its totient is φ = 18173872566720.

The previous prime is 40027646663597. The next prime is 40027646663671. The reversal of 40027646663642 is 24636664672004.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1025594063 + ... + 1025633090.

It is an arithmetic number, because the mean of its divisors is an integer number (4098351853692).

Almost surely, 2^{40027646663642} is an apocalyptic number.

40027646663642 is a deficient number, since it is larger than the sum of its proper divisors (25545982995430).

40027646663642 is a wasteful number, since it uses less digits than its factorization.

40027646663642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2051228053.

The product of its (nonzero) digits is 41803776, while the sum is 56.

The spelling of 40027646663642 in words is "forty trillion, twenty-seven billion, six hundred forty-six million, six hundred sixty-three thousand, six hundred forty-two".