55077578358851 has 2 divisors, whose sum is σ = 55077578358852. Its totient is φ = 55077578358850.

The previous prime is 55077578358793. The next prime is 55077578358911. The reversal of 55077578358851 is 15885387577055.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55077578358851 is a prime.

It is not a weakly prime, because it can be changed into another prime (55077578358251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27538789179425 + 27538789179426.

It is an arithmetic number, because the mean of its divisors is an integer number (27538789179426).

Almost surely, 2^{55077578358851} is an apocalyptic number.

55077578358851 is a deficient number, since it is larger than the sum of its proper divisors (1).

55077578358851 is an equidigital number, since it uses as much as digits as its factorization.

55077578358851 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1646400000, while the sum is 74.

The spelling of 55077578358851 in words is "fifty-five trillion, seventy-seven billion, five hundred seventy-eight million, three hundred fifty-eight thousand, eight hundred fifty-one".