61371928799 has 2 divisors, whose sum is σ = 61371928800. Its totient is φ = 61371928798.

The previous prime is 61371928763. The next prime is 61371928811. The reversal of 61371928799 is 99782917316.

61371928799 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 a de Polignac number, because none of the positive numbers 2^k-61371928799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61371928729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30685964399 + 30685964400.

It is an arithmetic number, because the mean of its divisors is an integer number (30685964400).

Almost surely, 2^61371928799 is an apocalyptic number.

61371928799 is a deficient number, since it is larger than the sum of its proper divisors (1).

61371928799 is an equidigital number, since it uses as much as digits as its factorization.

61371928799 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10287648, while the sum is 62.

The spelling of 61371928799 in words is "sixty-one billion, three hundred seventy-one million, nine hundred twenty-eight thousand, seven hundred ninety-nine".