2540001043477 has 2 divisors, whose sum is σ = 2540001043478. Its totient is φ = 2540001043476.

The previous prime is 2540001043453. The next prime is 2540001043507. The reversal of 2540001043477 is 7743401000452.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2506044136401 + 33956907076 = 1583049^2 + 184274^2 .

It is a cyclic number.

It is not a de Polignac number, because 2540001043477 - 2¹¹ = 2540001041429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2540001043427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1270000521738 + 1270000521739.

It is an arithmetic number, because the mean of its divisors is an integer number (1270000521739).

Almost surely, 2^{2540001043477} is an apocalyptic number.

It is an amenable number.

2540001043477 is a deficient number, since it is larger than the sum of its proper divisors (1).

2540001043477 is an equidigital number, since it uses as much as digits as its factorization.

2540001043477 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 94080, while the sum is 37.

The spelling of 2540001043477 in words is "two trillion, five hundred forty billion, one million, forty-three thousand, four hundred seventy-seven".