7401540880081 has 4 divisors (see below), whose sum is σ = 7656766427700. Its totient is φ = 7146315332464.

The previous prime is 7401540880061. The next prime is 7401540880103. The reversal of 7401540880081 is 1800880451047.

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 4116674623681 + 3284866256400 = 2028959^2 + 1812420^2 .

It is a cyclic number.

It is not a de Polignac number, because 7401540880081 - 2¹¹ = 7401540878033 is a prime.

It is a super-2 number, since 2×7401540880081² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7401540880051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127612773766 + ... + 127612773823.

It is an arithmetic number, because the mean of its divisors is an integer number (1914191606925).

Almost surely, 2^{7401540880081} is an apocalyptic number.

It is an amenable number.

7401540880081 is a deficient number, since it is larger than the sum of its proper divisors (255225547619).

7401540880081 is a wasteful number, since it uses less digits than its factorization.

7401540880081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255225547618.

The product of its (nonzero) digits is 286720, while the sum is 46.

The spelling of 7401540880081 in words is "seven trillion, four hundred one billion, five hundred forty million, eight hundred eighty thousand, eighty-one".