102754436821 has 2 divisors, whose sum is σ = 102754436822. Its totient is φ = 102754436820.

The previous prime is 102754436779. The next prime is 102754436849. The reversal of 102754436821 is 128634457201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66000179025 + 36754257796 = 256905^2 + 191714^2 .

It is a cyclic number.

It is not a de Polignac number, because 102754436821 - 2¹³ = 102754428629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102754434821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51377218410 + 51377218411.

It is an arithmetic number, because the mean of its divisors is an integer number (51377218411).

Almost surely, 2^102754436821 is an apocalyptic number.

It is an amenable number.

102754436821 is a deficient number, since it is larger than the sum of its proper divisors (1).

102754436821 is an equidigital number, since it uses as much as digits as its factorization.

102754436821 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 322560, while the sum is 43.

The spelling of 102754436821 in words is "one hundred two billion, seven hundred fifty-four million, four hundred thirty-six thousand, eight hundred twenty-one".