40501568212541 has 4 divisors (see below), whose sum is σ = 42884013401532. Its totient is φ = 38119123023552.

The previous prime is 40501568212513. The next prime is 40501568212561. The reversal of 40501568212541 is 14521286510504.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 38110744092100 + 2390824120441 = 6173390^2 + 1546229^2 .

It is a cyclic number.

It is not a de Polignac number, because 40501568212541 - 2⁴² = 36103521701437 is a prime.

It is a super-2 number, since 2×40501568212541² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40501568212492 and 40501568212501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40501568212561) 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, 1191222594470 + ... + 1191222594503.

It is an arithmetic number, because the mean of its divisors is an integer number (10721003350383).

Almost surely, 2^{40501568212541} is an apocalyptic number.

It is an amenable number.

40501568212541 is a deficient number, since it is larger than the sum of its proper divisors (2382445188991).

40501568212541 is a wasteful number, since it uses less digits than its factorization.

40501568212541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2382445188990.

The product of its (nonzero) digits is 384000, while the sum is 44.

The spelling of 40501568212541 in words is "forty trillion, five hundred one billion, five hundred sixty-eight million, two hundred twelve thousand, five hundred forty-one".