61573004371 has 2 divisors, whose sum is σ = 61573004372. Its totient is φ = 61573004370.

The previous prime is 61573004333. The next prime is 61573004393. The reversal of 61573004371 is 17340037516.

61573004371 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 is a cyclic number.

It is not a de Polignac number, because 61573004371 - 2¹³ = 61572996179 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61573004371.

It is not a weakly prime, because it can be changed into another prime (61573004671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30786502185 + 30786502186.

It is an arithmetic number, because the mean of its divisors is an integer number (30786502186).

Almost surely, 2^61573004371 is an apocalyptic number.

61573004371 is a deficient number, since it is larger than the sum of its proper divisors (1).

61573004371 is an equidigital number, since it uses as much as digits as its factorization.

61573004371 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52920, while the sum is 37.

The spelling of 61573004371 in words is "sixty-one billion, five hundred seventy-three million, four thousand, three hundred seventy-one".