40542484889 has 2 divisors, whose sum is σ = 40542484890. Its totient is φ = 40542484888.

The previous prime is 40542484757. The next prime is 40542484903. The reversal of 40542484889 is 98848424504.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33880660489 + 6661824400 = 184067^2 + 81620^2 .

It is a cyclic number.

It is not a de Polignac number, because 40542484889 - 2¹⁶ = 40542419353 is a prime.

It is not a weakly prime, because it can be changed into another prime (40542483889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20271242444 + 20271242445.

It is an arithmetic number, because the mean of its divisors is an integer number (20271242445).

Almost surely, 2^40542484889 is an apocalyptic number.

It is an amenable number.

40542484889 is a deficient number, since it is larger than the sum of its proper divisors (1).

40542484889 is an equidigital number, since it uses as much as digits as its factorization.

40542484889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11796480, while the sum is 56.

The spelling of 40542484889 in words is "forty billion, five hundred forty-two million, four hundred eighty-four thousand, eight hundred eighty-nine".