40098725761 has 2 divisors, whose sum is σ = 40098725762. Its totient is φ = 40098725760.

The previous prime is 40098725713. The next prime is 40098725789. The reversal of 40098725761 is 16752789004.

40098725761 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28817099536 + 11281626225 = 169756^2 + 106215^2 .

It is a cyclic number.

It is not a de Polignac number, because 40098725761 - 2¹⁵ = 40098692993 is a prime.

It is not a weakly prime, because it can be changed into another prime (40098725791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20049362880 + 20049362881.

It is an arithmetic number, because the mean of its divisors is an integer number (20049362881).

Almost surely, 2^40098725761 is an apocalyptic number.

It is an amenable number.

40098725761 is a deficient number, since it is larger than the sum of its proper divisors (1).

40098725761 is an equidigital number, since it uses as much as digits as its factorization.

40098725761 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 846720, while the sum is 49.

The spelling of 40098725761 in words is "forty billion, ninety-eight million, seven hundred twenty-five thousand, seven hundred sixty-one".