540679366981 has 16 divisors (see below), whose sum is σ = 597579446464. Its totient is φ = 486035230464.

The previous prime is 540679366979. The next prime is 540679367149. The reversal of 540679366981 is 189663976045.

It is a cyclic number.

It is not a de Polignac number, because 540679366981 - 2¹ = 540679366979 is a prime.

It is a super-2 number, since 2×540679366981² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (540679366961) 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, 1246671 + ... + 1623436.

It is an arithmetic number, because the mean of its divisors is an integer number (37348715404).

Almost surely, 2^540679366981 is an apocalyptic number.

It is an amenable number.

540679366981 is a deficient number, since it is larger than the sum of its proper divisors (56900079483).

540679366981 is a wasteful number, since it uses less digits than its factorization.

540679366981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2870500.

The product of its (nonzero) digits is 58786560, while the sum is 64.

The spelling of 540679366981 in words is "five hundred forty billion, six hundred seventy-nine million, three hundred sixty-six thousand, nine hundred eighty-one".