55864904408749 has 2 divisors, whose sum is σ = 55864904408750. Its totient is φ = 55864904408748.

The previous prime is 55864904408723. The next prime is 55864904408767. The reversal of 55864904408749 is 94780440946855.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52609171355524 + 3255733053225 = 7253218^2 + 1804365^2 .

It is a cyclic number.

It is not a de Polignac number, because 55864904408749 - 2⁵ = 55864904408717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55864904408249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27932452204374 + 27932452204375.

It is an arithmetic number, because the mean of its divisors is an integer number (27932452204375).

Almost surely, 2^{55864904408749} is an apocalyptic number.

It is an amenable number.

55864904408749 is a deficient number, since it is larger than the sum of its proper divisors (1).

55864904408749 is an equidigital number, since it uses as much as digits as its factorization.

55864904408749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1393459200, while the sum is 73.

The spelling of 55864904408749 in words is "fifty-five trillion, eight hundred sixty-four billion, nine hundred four million, four hundred eight thousand, seven hundred forty-nine".