40501655001605 has 16 divisors (see below), whose sum is σ = 55545762342144. Its totient is φ = 27772245688320.

The previous prime is 40501655001601. The next prime is 40501655001659. The reversal of 40501655001605 is 50610055610504.

It is a happy number.

It is not a de Polignac number, because 40501655001605 - 2² = 40501655001601 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40501655001601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3495932 + ... + 9655301.

It is an arithmetic number, because the mean of its divisors is an integer number (3471610146384).

Almost surely, 2^{40501655001605} is an apocalyptic number.

It is an amenable number.

40501655001605 is a deficient number, since it is larger than the sum of its proper divisors (15044107340539).

40501655001605 is a wasteful number, since it uses less digits than its factorization.

40501655001605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13239236.

The product of its (nonzero) digits is 90000, while the sum is 38.

The spelling of 40501655001605 in words is "forty trillion, five hundred one billion, six hundred fifty-five million, one thousand, six hundred five".