40878627578765 has 4 divisors (see below), whose sum is σ = 49054353094524. Its totient is φ = 32702902063008.

The previous prime is 40878627578731. The next prime is 40878627578779. The reversal of 40878627578765 is 56787572687804.

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 17006081088649 + 23872546490116 = 4123843^2 + 4885954^2 .

It is a cyclic number.

It is not a de Polignac number, because 40878627578765 - 2¹⁰ = 40878627577741 is a prime.

It is a super-3 number, since 3×40878627578765³ (a number of 42 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40878627578765.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4087862757872 + ... + 4087862757881.

It is an arithmetic number, because the mean of its divisors is an integer number (12263588273631).

Almost surely, 2^{40878627578765} is an apocalyptic number.

It is an amenable number.

40878627578765 is a deficient number, since it is larger than the sum of its proper divisors (8175725515759).

40878627578765 is an equidigital number, since it uses as much as digits as its factorization.

40878627578765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8175725515758.

The product of its (nonzero) digits is 8851046400, while the sum is 80.

The spelling of 40878627578765 in words is "forty trillion, eight hundred seventy-eight billion, six hundred twenty-seven million, five hundred seventy-eight thousand, seven hundred sixty-five".