15400650061 has 2 divisors, whose sum is σ = 15400650062. Its totient is φ = 15400650060.

The previous prime is 15400650049. The next prime is 15400650073. The reversal of 15400650061 is 16005600451.

It is a balanced prime because it is at equal distance from previous prime (15400650049) and next prime (15400650073).

It can be written as a sum of positive squares in only one way, i.e., 14460062500 + 940587561 = 120250^2 + 30669^2 .

It is an emirp because it is prime and its reverse (16005600451) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15400650061 - 2²¹ = 15398552909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15400660061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7700325030 + 7700325031.

It is an arithmetic number, because the mean of its divisors is an integer number (7700325031).

Almost surely, 2^15400650061 is an apocalyptic number.

It is an amenable number.

15400650061 is a deficient number, since it is larger than the sum of its proper divisors (1).

15400650061 is an equidigital number, since it uses as much as digits as its factorization.

15400650061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3600, while the sum is 28.

The spelling of 15400650061 in words is "fifteen billion, four hundred million, six hundred fifty thousand, sixty-one".