40537890766081 has 4 divisors (see below), whose sum is σ = 40750131032064. Its totient is φ = 40325650500100.

The previous prime is 40537890766057. The next prime is 40537890766117. The reversal of 40537890766081 is 18066709873504.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40537890766081 - 2²¹ = 40537888668929 is a prime.

It is a super-2 number, since 2×40537890766081² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40537890766981) 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, 106120132705 + ... + 106120133086.

It is an arithmetic number, because the mean of its divisors is an integer number (10187532758016).

Almost surely, 2^{40537890766081} is an apocalyptic number.

It is an amenable number.

40537890766081 is a deficient number, since it is larger than the sum of its proper divisors (212240265983).

40537890766081 is a wasteful number, since it uses less digits than its factorization.

40537890766081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212240265982.

The product of its (nonzero) digits is 60963840, while the sum is 64.

The spelling of 40537890766081 in words is "forty trillion, five hundred thirty-seven billion, eight hundred ninety million, seven hundred sixty-six thousand, eighty-one".